Commit | Line | Data |
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252b5132 | 1 | /* symbols.c -symbol table- |
f7e42eb4 | 2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
a76903bf | 3 | 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
7c743825 | 23 | /* #define DEBUG_SYMS / * to debug symbol list maintenance. */ |
252b5132 | 24 | |
252b5132 RH |
25 | #include "as.h" |
26 | ||
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "obstack.h" /* For "symbols.h" */ |
29 | #include "subsegs.h" | |
30 | ||
49309057 ILT |
31 | #include "struc-symbol.h" |
32 | ||
252b5132 RH |
33 | /* This is non-zero if symbols are case sensitive, which is the |
34 | default. */ | |
35 | int symbols_case_sensitive = 1; | |
36 | ||
37 | #ifndef WORKING_DOT_WORD | |
38 | extern int new_broken_words; | |
39 | #endif | |
40 | ||
41 | /* symbol-name => struct symbol pointer */ | |
42 | static struct hash_control *sy_hash; | |
43 | ||
49309057 ILT |
44 | /* Table of local symbols. */ |
45 | static struct hash_control *local_hash; | |
46 | ||
7c743825 | 47 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
48 | symbolS *symbol_rootP; |
49 | symbolS *symbol_lastP; | |
50 | symbolS abs_symbol; | |
51 | ||
52 | #ifdef DEBUG_SYMS | |
53 | #define debug_verify_symchain verify_symbol_chain | |
54 | #else | |
55 | #define debug_verify_symchain(root, last) ((void) 0) | |
56 | #endif | |
57 | ||
aa257fcd NC |
58 | #define DOLLAR_LABEL_CHAR '\001' |
59 | #define LOCAL_LABEL_CHAR '\002' | |
60 | ||
252b5132 | 61 | struct obstack notes; |
977cdf5a NC |
62 | #ifdef USE_UNIQUE |
63 | /* The name of an external symbol which is | |
64 | used to make weak PE symbol names unique. */ | |
65 | const char * an_external_name; | |
66 | #endif | |
252b5132 | 67 | |
74937d39 KH |
68 | static char *save_symbol_name (const char *); |
69 | static void fb_label_init (void); | |
70 | static long dollar_label_instance (long); | |
71 | static long fb_label_instance (long); | |
252b5132 | 72 | |
74937d39 KH |
73 | static void print_binary (FILE *, const char *, expressionS *); |
74 | static void report_op_error (symbolS *, symbolS *, symbolS *); | |
252b5132 | 75 | |
7c743825 | 76 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
77 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
78 | chain. | |
7c743825 | 79 | |
252b5132 RH |
80 | This function should be called in the general case of creating a |
81 | symbol. However, if the output file symbol table has already been | |
82 | set, and you are certain that this symbol won't be wanted in the | |
83 | output file, you can call symbol_create. */ | |
84 | ||
85 | symbolS * | |
74937d39 | 86 | symbol_new (const char *name, segT segment, valueT valu, fragS *frag) |
252b5132 RH |
87 | { |
88 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
89 | ||
7c743825 | 90 | /* Link to end of symbol chain. */ |
252b5132 RH |
91 | { |
92 | extern int symbol_table_frozen; | |
93 | if (symbol_table_frozen) | |
94 | abort (); | |
95 | } | |
252b5132 RH |
96 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); |
97 | ||
98 | return symbolP; | |
99 | } | |
100 | ||
49309057 ILT |
101 | /* Save a symbol name on a permanent obstack, and convert it according |
102 | to the object file format. */ | |
103 | ||
104 | static char * | |
74937d39 | 105 | save_symbol_name (const char *name) |
252b5132 RH |
106 | { |
107 | unsigned int name_length; | |
49309057 | 108 | char *ret; |
252b5132 | 109 | |
7c743825 | 110 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 111 | obstack_grow (¬es, name, name_length); |
49309057 ILT |
112 | ret = obstack_finish (¬es); |
113 | ||
252b5132 | 114 | #ifdef tc_canonicalize_symbol_name |
49309057 | 115 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
116 | #endif |
117 | ||
118 | if (! symbols_case_sensitive) | |
119 | { | |
3882b010 | 120 | char *s; |
252b5132 | 121 | |
3882b010 L |
122 | for (s = ret; *s != '\0'; s++) |
123 | *s = TOUPPER (*s); | |
252b5132 RH |
124 | } |
125 | ||
49309057 ILT |
126 | return ret; |
127 | } | |
128 | ||
129 | symbolS * | |
74937d39 KH |
130 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
131 | segT segment, /* Segment identifier (SEG_<something>). */ | |
132 | valueT valu, /* Symbol value. */ | |
133 | fragS *frag /* Associated fragment. */) | |
49309057 ILT |
134 | { |
135 | char *preserved_copy_of_name; | |
136 | symbolS *symbolP; | |
137 | ||
138 | preserved_copy_of_name = save_symbol_name (name); | |
139 | ||
252b5132 RH |
140 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
141 | ||
7c743825 | 142 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
143 | memset (symbolP, 0, sizeof (symbolS)); |
144 | ||
252b5132 RH |
145 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); |
146 | if (symbolP->bsym == NULL) | |
147 | as_perror ("%s", "bfd_make_empty_symbol"); | |
148 | symbolP->bsym->udata.p = (PTR) symbolP; | |
252b5132 RH |
149 | S_SET_NAME (symbolP, preserved_copy_of_name); |
150 | ||
151 | S_SET_SEGMENT (symbolP, segment); | |
152 | S_SET_VALUE (symbolP, valu); | |
153 | symbol_clear_list_pointers (symbolP); | |
154 | ||
155 | symbolP->sy_frag = frag; | |
252b5132 RH |
156 | |
157 | obj_symbol_new_hook (symbolP); | |
158 | ||
159 | #ifdef tc_symbol_new_hook | |
160 | tc_symbol_new_hook (symbolP); | |
161 | #endif | |
162 | ||
163 | return symbolP; | |
164 | } | |
165 | \f | |
49309057 ILT |
166 | |
167 | /* Local symbol support. If we can get away with it, we keep only a | |
168 | small amount of information for local symbols. */ | |
169 | ||
74937d39 | 170 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
171 | |
172 | /* Used for statistics. */ | |
173 | ||
174 | static unsigned long local_symbol_count; | |
175 | static unsigned long local_symbol_conversion_count; | |
176 | ||
177 | /* This macro is called with a symbol argument passed by reference. | |
178 | It returns whether this is a local symbol. If necessary, it | |
179 | changes its argument to the real symbol. */ | |
180 | ||
181 | #define LOCAL_SYMBOL_CHECK(s) \ | |
182 | (s->bsym == NULL \ | |
183 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
184 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
185 | 0) \ | |
186 | : 1) \ | |
187 | : 0) | |
188 | ||
189 | /* Create a local symbol and insert it into the local hash table. */ | |
190 | ||
87c245cc | 191 | static struct local_symbol * |
74937d39 | 192 | local_symbol_make (const char *name, segT section, valueT value, fragS *frag) |
49309057 ILT |
193 | { |
194 | char *name_copy; | |
195 | struct local_symbol *ret; | |
196 | ||
197 | ++local_symbol_count; | |
198 | ||
199 | name_copy = save_symbol_name (name); | |
200 | ||
201 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
202 | ret->lsy_marker = NULL; | |
203 | ret->lsy_name = name_copy; | |
204 | ret->lsy_section = section; | |
205 | local_symbol_set_frag (ret, frag); | |
bd780143 | 206 | ret->lsy_value = value; |
49309057 ILT |
207 | |
208 | hash_jam (local_hash, name_copy, (PTR) ret); | |
209 | ||
210 | return ret; | |
211 | } | |
212 | ||
213 | /* Convert a local symbol into a real symbol. Note that we do not | |
214 | reclaim the space used by the local symbol. */ | |
215 | ||
216 | static symbolS * | |
74937d39 | 217 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
218 | { |
219 | symbolS *ret; | |
220 | ||
221 | assert (locsym->lsy_marker == NULL); | |
222 | if (local_symbol_converted_p (locsym)) | |
223 | return local_symbol_get_real_symbol (locsym); | |
224 | ||
225 | ++local_symbol_conversion_count; | |
226 | ||
bd780143 | 227 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
228 | local_symbol_get_frag (locsym)); |
229 | ||
230 | if (local_symbol_resolved_p (locsym)) | |
231 | ret->sy_resolved = 1; | |
232 | ||
233 | /* Local symbols are always either defined or used. */ | |
234 | ret->sy_used = 1; | |
235 | ||
8c5e1ccd AO |
236 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
237 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
238 | #endif | |
239 | ||
49309057 ILT |
240 | symbol_table_insert (ret); |
241 | ||
242 | local_symbol_mark_converted (locsym); | |
243 | local_symbol_set_real_symbol (locsym, ret); | |
244 | ||
245 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
246 | ||
247 | return ret; | |
248 | } | |
49309057 | 249 | \f |
7c743825 KH |
250 | /* We have just seen "<name>:". |
251 | Creates a struct symbol unless it already exists. | |
252 | ||
253 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 254 | |
252b5132 | 255 | symbolS * |
74937d39 KH |
256 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
257 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
258 | /* We copy this string: OK to alter later. */) | |
252b5132 | 259 | { |
7c743825 | 260 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 261 | |
7cf10893 | 262 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 | 263 | defined. */ |
7be1c489 AM |
264 | if (LOCAL_LABELS_DOLLAR |
265 | && !bfd_is_local_label_name (stdoutput, sym_name)) | |
266 | dollar_label_clear (); | |
252b5132 RH |
267 | |
268 | #ifndef WORKING_DOT_WORD | |
269 | if (new_broken_words) | |
270 | { | |
271 | struct broken_word *a; | |
272 | int possible_bytes; | |
273 | fragS *frag_tmp; | |
274 | char *frag_opcode; | |
275 | ||
7cf10893 NC |
276 | if (now_seg == absolute_section) |
277 | { | |
278 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
279 | return NULL; | |
280 | } | |
1d3b2b27 | 281 | |
252b5132 RH |
282 | possible_bytes = (md_short_jump_size |
283 | + new_broken_words * md_long_jump_size); | |
284 | ||
285 | frag_tmp = frag_now; | |
286 | frag_opcode = frag_var (rs_broken_word, | |
287 | possible_bytes, | |
288 | possible_bytes, | |
289 | (relax_substateT) 0, | |
290 | (symbolS *) broken_words, | |
291 | (offsetT) 0, | |
292 | NULL); | |
293 | ||
7c743825 KH |
294 | /* We want to store the pointer to where to insert the jump |
295 | table in the fr_opcode of the rs_broken_word frag. This | |
296 | requires a little hackery. */ | |
252b5132 RH |
297 | while (frag_tmp |
298 | && (frag_tmp->fr_type != rs_broken_word | |
299 | || frag_tmp->fr_opcode)) | |
300 | frag_tmp = frag_tmp->fr_next; | |
301 | know (frag_tmp); | |
302 | frag_tmp->fr_opcode = frag_opcode; | |
303 | new_broken_words = 0; | |
304 | ||
305 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
306 | a->dispfrag = frag_tmp; | |
307 | } | |
308 | #endif /* WORKING_DOT_WORD */ | |
309 | ||
310 | if ((symbolP = symbol_find (sym_name)) != 0) | |
311 | { | |
312 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
313 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
314 | return symbolP; | |
315 | #endif | |
7c743825 | 316 | /* Now check for undefined symbols. */ |
49309057 ILT |
317 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
318 | { | |
319 | struct local_symbol *locsym = (struct local_symbol *) symbolP; | |
320 | ||
321 | if (locsym->lsy_section != undefined_section | |
322 | && (local_symbol_get_frag (locsym) != frag_now | |
323 | || locsym->lsy_section != now_seg | |
bd780143 | 324 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 325 | { |
0e389e77 | 326 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
327 | return symbolP; |
328 | } | |
329 | ||
330 | locsym->lsy_section = now_seg; | |
331 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 332 | locsym->lsy_value = frag_now_fix (); |
49309057 ILT |
333 | } |
334 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
335 | { |
336 | if (S_GET_VALUE (symbolP) == 0) | |
337 | { | |
338 | symbolP->sy_frag = frag_now; | |
339 | #ifdef OBJ_VMS | |
7c743825 | 340 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
341 | #endif |
342 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
343 | S_SET_SEGMENT (symbolP, now_seg); | |
344 | #ifdef N_UNDF | |
345 | know (N_UNDF == 0); | |
7c743825 | 346 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
347 | |
348 | } | |
349 | else | |
350 | { | |
7c743825 KH |
351 | /* There are still several cases to check: |
352 | ||
353 | A .comm/.lcomm symbol being redefined as initialized | |
354 | data is OK | |
355 | ||
356 | A .comm/.lcomm symbol being redefined with a larger | |
357 | size is also OK | |
358 | ||
359 | This only used to be allowed on VMS gas, but Sun cc | |
360 | on the sparc also depends on it. */ | |
252b5132 RH |
361 | |
362 | if (((!S_IS_DEBUG (symbolP) | |
363 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
364 | && S_IS_EXTERNAL (symbolP)) | |
365 | || S_GET_SEGMENT (symbolP) == bss_section) | |
366 | && (now_seg == data_section | |
367 | || now_seg == S_GET_SEGMENT (symbolP))) | |
368 | { | |
7c743825 | 369 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
370 | if (now_seg != data_section) |
371 | { | |
7c743825 KH |
372 | /* New .comm for prev .comm symbol. |
373 | ||
374 | If the new size is larger we just change its | |
375 | value. If the new size is smaller, we ignore | |
376 | this symbol. */ | |
252b5132 RH |
377 | if (S_GET_VALUE (symbolP) |
378 | < ((unsigned) frag_now_fix ())) | |
379 | { | |
380 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
381 | } | |
382 | } | |
383 | else | |
384 | { | |
385 | /* It is a .comm/.lcomm being converted to initialized | |
386 | data. */ | |
387 | symbolP->sy_frag = frag_now; | |
388 | #ifdef OBJ_VMS | |
7c743825 | 389 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
390 | #endif |
391 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 392 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
393 | } |
394 | } | |
395 | else | |
396 | { | |
4c63da97 AM |
397 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
398 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
399 | static const char *od_buf = ""; | |
252b5132 | 400 | #else |
4c63da97 AM |
401 | char od_buf[100]; |
402 | od_buf[0] = '\0'; | |
4c63da97 | 403 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) |
d1a6c242 KH |
404 | sprintf (od_buf, "%d.%d.", |
405 | S_GET_OTHER (symbolP), | |
406 | S_GET_DESC (symbolP)); | |
4c63da97 | 407 | #endif |
0e389e77 | 408 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
409 | sym_name, |
410 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 411 | od_buf, |
252b5132 | 412 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 413 | } |
7c743825 | 414 | } /* if the undefined symbol has no value */ |
252b5132 RH |
415 | } |
416 | else | |
417 | { | |
7c743825 | 418 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
419 | if (!(frag_now == symbolP->sy_frag |
420 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
421 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 422 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 423 | } |
252b5132 RH |
424 | |
425 | } | |
49309057 ILT |
426 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) |
427 | { | |
428 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
429 | (valueT) frag_now_fix (), | |
430 | frag_now); | |
431 | } | |
252b5132 RH |
432 | else |
433 | { | |
434 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
435 | frag_now); | |
436 | #ifdef OBJ_VMS | |
437 | S_SET_OTHER (symbolP, const_flag); | |
438 | #endif /* OBJ_VMS */ | |
439 | ||
440 | symbol_table_insert (symbolP); | |
d4887adc | 441 | } |
252b5132 RH |
442 | |
443 | if (mri_common_symbol != NULL) | |
444 | { | |
445 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 446 | section. This requires special handling. */ |
49309057 ILT |
447 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
448 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
449 | symbolP->sy_value.X_op = O_symbol; |
450 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
451 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
452 | symbolP->sy_frag = &zero_address_frag; | |
453 | S_SET_SEGMENT (symbolP, expr_section); | |
454 | symbolP->sy_mri_common = 1; | |
455 | } | |
456 | ||
457 | #ifdef tc_frob_label | |
458 | tc_frob_label (symbolP); | |
459 | #endif | |
460 | #ifdef obj_frob_label | |
461 | obj_frob_label (symbolP); | |
462 | #endif | |
463 | ||
464 | return symbolP; | |
465 | } | |
466 | \f | |
7c743825 | 467 | /* Die if we can't insert the symbol. */ |
252b5132 | 468 | |
7c743825 | 469 | void |
74937d39 | 470 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
471 | { |
472 | register const char *error_string; | |
473 | ||
474 | know (symbolP); | |
475 | know (S_GET_NAME (symbolP)); | |
476 | ||
49309057 ILT |
477 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
478 | { | |
479 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
480 | (PTR) symbolP); | |
481 | if (error_string != NULL) | |
0e389e77 | 482 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
483 | S_GET_NAME (symbolP), error_string); |
484 | return; | |
485 | } | |
486 | ||
252b5132 RH |
487 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
488 | { | |
0e389e77 | 489 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 490 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
491 | } /* on error */ |
492 | } | |
252b5132 | 493 | \f |
7c743825 KH |
494 | /* If a symbol name does not exist, create it as undefined, and insert |
495 | it into the symbol table. Return a pointer to it. */ | |
496 | ||
252b5132 | 497 | symbolS * |
74937d39 | 498 | symbol_find_or_make (const char *name) |
252b5132 RH |
499 | { |
500 | register symbolS *symbolP; | |
501 | ||
502 | symbolP = symbol_find (name); | |
503 | ||
504 | if (symbolP == NULL) | |
505 | { | |
49309057 ILT |
506 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) |
507 | { | |
508 | symbolP = md_undefined_symbol ((char *) name); | |
509 | if (symbolP != NULL) | |
510 | return symbolP; | |
511 | ||
512 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
513 | (valueT) 0, | |
514 | &zero_address_frag); | |
515 | return symbolP; | |
516 | } | |
49309057 | 517 | |
252b5132 RH |
518 | symbolP = symbol_make (name); |
519 | ||
520 | symbol_table_insert (symbolP); | |
521 | } /* if symbol wasn't found */ | |
522 | ||
523 | return (symbolP); | |
7c743825 | 524 | } |
252b5132 RH |
525 | |
526 | symbolS * | |
74937d39 | 527 | symbol_make (const char *name) |
252b5132 RH |
528 | { |
529 | symbolS *symbolP; | |
530 | ||
7c743825 | 531 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
532 | symbolP = md_undefined_symbol ((char *) name); |
533 | ||
534 | if (!symbolP) | |
535 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
536 | ||
537 | return (symbolP); | |
7c743825 | 538 | } |
252b5132 | 539 | |
b7d6ed97 | 540 | symbolS * |
74937d39 | 541 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 542 | { |
756d1d01 | 543 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
544 | } |
545 | ||
546 | symbolS * | |
74937d39 | 547 | symbol_temp_new_now (void) |
b7d6ed97 RH |
548 | { |
549 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
550 | } | |
551 | ||
552 | symbolS * | |
74937d39 | 553 | symbol_temp_make (void) |
b7d6ed97 | 554 | { |
756d1d01 | 555 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
556 | } |
557 | ||
7c743825 KH |
558 | /* Implement symbol table lookup. |
559 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
560 | Out: NULL if the name was not in the symbol table, else the address | |
561 | of a struct symbol associated with that name. */ | |
252b5132 | 562 | |
9758f3fc | 563 | symbolS * |
74937d39 | 564 | symbol_find_exact (const char *name) |
9758f3fc | 565 | { |
7be1c489 | 566 | struct local_symbol *locsym; |
9758f3fc | 567 | |
7be1c489 AM |
568 | locsym = (struct local_symbol *) hash_find (local_hash, name); |
569 | if (locsym != NULL) | |
570 | return (symbolS *) locsym; | |
9758f3fc AM |
571 | |
572 | return ((symbolS *) hash_find (sy_hash, name)); | |
573 | } | |
574 | ||
252b5132 | 575 | symbolS * |
91c4c449 | 576 | symbol_find (const char *name) |
252b5132 | 577 | { |
252b5132 RH |
578 | #ifdef tc_canonicalize_symbol_name |
579 | { | |
580 | char *copy; | |
03987ced | 581 | size_t len = strlen (name) + 1; |
252b5132 | 582 | |
03987ced RH |
583 | copy = (char *) alloca (len); |
584 | memcpy (copy, name, len); | |
252b5132 RH |
585 | name = tc_canonicalize_symbol_name (copy); |
586 | } | |
587 | #endif | |
588 | ||
589 | if (! symbols_case_sensitive) | |
590 | { | |
03987ced RH |
591 | char *copy; |
592 | const char *orig; | |
593 | unsigned char c; | |
594 | ||
595 | orig = name; | |
596 | name = copy = (char *) alloca (strlen (name) + 1); | |
597 | ||
598 | while ((c = *orig++) != '\0') | |
599 | { | |
3882b010 | 600 | *copy++ = TOUPPER (c); |
03987ced RH |
601 | } |
602 | *copy = '\0'; | |
252b5132 RH |
603 | } |
604 | ||
9758f3fc | 605 | return symbol_find_exact (name); |
252b5132 RH |
606 | } |
607 | ||
7c743825 KH |
608 | /* Once upon a time, symbols were kept in a singly linked list. At |
609 | least coff needs to be able to rearrange them from time to time, for | |
610 | which a doubly linked list is much more convenient. Loic did these | |
611 | as macros which seemed dangerous to me so they're now functions. | |
612 | xoxorich. */ | |
613 | ||
614 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 615 | |
7c743825 | 616 | void |
74937d39 KH |
617 | symbol_append (symbolS *addme, symbolS *target, |
618 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 619 | { |
49309057 ILT |
620 | if (LOCAL_SYMBOL_CHECK (addme)) |
621 | abort (); | |
622 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
623 | abort (); | |
624 | ||
252b5132 RH |
625 | if (target == NULL) |
626 | { | |
627 | know (*rootPP == NULL); | |
628 | know (*lastPP == NULL); | |
629 | addme->sy_next = NULL; | |
252b5132 | 630 | addme->sy_previous = NULL; |
252b5132 RH |
631 | *rootPP = addme; |
632 | *lastPP = addme; | |
633 | return; | |
7c743825 | 634 | } /* if the list is empty */ |
252b5132 RH |
635 | |
636 | if (target->sy_next != NULL) | |
637 | { | |
252b5132 | 638 | target->sy_next->sy_previous = addme; |
252b5132 RH |
639 | } |
640 | else | |
641 | { | |
642 | know (*lastPP == target); | |
643 | *lastPP = addme; | |
7c743825 | 644 | } /* if we have a next */ |
252b5132 RH |
645 | |
646 | addme->sy_next = target->sy_next; | |
647 | target->sy_next = addme; | |
252b5132 | 648 | addme->sy_previous = target; |
252b5132 RH |
649 | |
650 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
651 | } | |
652 | ||
7c743825 KH |
653 | /* Set the chain pointers of SYMBOL to null. */ |
654 | ||
655 | void | |
74937d39 | 656 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 657 | { |
49309057 ILT |
658 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
659 | abort (); | |
252b5132 | 660 | symbolP->sy_next = NULL; |
252b5132 | 661 | symbolP->sy_previous = NULL; |
252b5132 RH |
662 | } |
663 | ||
7c743825 KH |
664 | /* Remove SYMBOLP from the list. */ |
665 | ||
666 | void | |
74937d39 | 667 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 668 | { |
49309057 ILT |
669 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
670 | abort (); | |
671 | ||
252b5132 RH |
672 | if (symbolP == *rootPP) |
673 | { | |
674 | *rootPP = symbolP->sy_next; | |
7c743825 | 675 | } /* if it was the root */ |
252b5132 RH |
676 | |
677 | if (symbolP == *lastPP) | |
678 | { | |
679 | *lastPP = symbolP->sy_previous; | |
7c743825 | 680 | } /* if it was the tail */ |
252b5132 RH |
681 | |
682 | if (symbolP->sy_next != NULL) | |
683 | { | |
684 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 685 | } /* if not last */ |
252b5132 RH |
686 | |
687 | if (symbolP->sy_previous != NULL) | |
688 | { | |
689 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 690 | } /* if not first */ |
252b5132 RH |
691 | |
692 | debug_verify_symchain (*rootPP, *lastPP); | |
693 | } | |
694 | ||
7c743825 KH |
695 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
696 | ||
697 | void | |
74937d39 KH |
698 | symbol_insert (symbolS *addme, symbolS *target, |
699 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 700 | { |
49309057 ILT |
701 | if (LOCAL_SYMBOL_CHECK (addme)) |
702 | abort (); | |
703 | if (LOCAL_SYMBOL_CHECK (target)) | |
704 | abort (); | |
705 | ||
252b5132 RH |
706 | if (target->sy_previous != NULL) |
707 | { | |
708 | target->sy_previous->sy_next = addme; | |
709 | } | |
710 | else | |
711 | { | |
712 | know (*rootPP == target); | |
713 | *rootPP = addme; | |
7c743825 | 714 | } /* if not first */ |
252b5132 RH |
715 | |
716 | addme->sy_previous = target->sy_previous; | |
717 | target->sy_previous = addme; | |
718 | addme->sy_next = target; | |
719 | ||
720 | debug_verify_symchain (*rootPP, *lastPP); | |
721 | } | |
722 | ||
7c743825 | 723 | void |
74937d39 | 724 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
725 | { |
726 | symbolS *symbolP = rootP; | |
727 | ||
728 | if (symbolP == NULL) | |
729 | return; | |
730 | ||
731 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
732 | { | |
49309057 | 733 | assert (symbolP->bsym != NULL); |
252b5132 | 734 | assert (symbolP->sy_next->sy_previous == symbolP); |
252b5132 RH |
735 | } |
736 | ||
737 | assert (lastP == symbolP); | |
738 | } | |
739 | ||
0909233e | 740 | static void |
74937d39 | 741 | report_op_error (symbolS *symp, symbolS *left, symbolS *right) |
0909233e AM |
742 | { |
743 | char *file; | |
744 | unsigned int line; | |
745 | segT seg_left = S_GET_SEGMENT (left); | |
746 | segT seg_right = right ? S_GET_SEGMENT (right) : 0; | |
1d3b2b27 | 747 | |
0909233e AM |
748 | if (expr_symbol_where (symp, &file, &line)) |
749 | { | |
750 | if (seg_left == undefined_section) | |
751 | as_bad_where (file, line, | |
752 | _("undefined symbol `%s' in operation"), | |
753 | S_GET_NAME (left)); | |
754 | if (seg_right == undefined_section) | |
755 | as_bad_where (file, line, | |
756 | _("undefined symbol `%s' in operation"), | |
757 | S_GET_NAME (right)); | |
758 | if (seg_left != undefined_section | |
759 | && seg_right != undefined_section) | |
760 | { | |
761 | if (right) | |
762 | as_bad_where (file, line, | |
763 | _("invalid sections for operation on `%s' and `%s'"), | |
764 | S_GET_NAME (left), S_GET_NAME (right)); | |
765 | else | |
766 | as_bad_where (file, line, | |
767 | _("invalid section for operation on `%s'"), | |
768 | S_GET_NAME (left)); | |
769 | } | |
1d3b2b27 | 770 | |
0909233e AM |
771 | } |
772 | else | |
773 | { | |
774 | if (seg_left == undefined_section) | |
775 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
776 | S_GET_NAME (left), S_GET_NAME (symp)); | |
777 | if (seg_right == undefined_section) | |
778 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
779 | S_GET_NAME (right), S_GET_NAME (symp)); | |
780 | if (seg_left != undefined_section | |
781 | && seg_right != undefined_section) | |
782 | { | |
783 | if (right) | |
784 | as_bad_where (file, line, | |
785 | _("invalid sections for operation on `%s' and `%s' setting `%s'"), | |
786 | S_GET_NAME (left), S_GET_NAME (right), S_GET_NAME (symp)); | |
787 | else | |
788 | as_bad_where (file, line, | |
789 | _("invalid section for operation on `%s' setting `%s'"), | |
790 | S_GET_NAME (left), S_GET_NAME (symp)); | |
791 | } | |
792 | } | |
793 | } | |
794 | ||
252b5132 RH |
795 | /* Resolve the value of a symbol. This is called during the final |
796 | pass over the symbol table to resolve any symbols with complex | |
797 | values. */ | |
798 | ||
799 | valueT | |
74937d39 | 800 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
801 | { |
802 | int resolved; | |
03e83a45 | 803 | valueT final_val = 0; |
252b5132 RH |
804 | segT final_seg; |
805 | ||
49309057 ILT |
806 | if (LOCAL_SYMBOL_CHECK (symp)) |
807 | { | |
808 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
809 | ||
bd780143 | 810 | final_val = locsym->lsy_value; |
49309057 | 811 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 812 | return final_val; |
49309057 | 813 | |
bd780143 | 814 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 815 | |
6386f3a7 | 816 | if (finalize_syms) |
49309057 | 817 | { |
bd780143 | 818 | locsym->lsy_value = final_val; |
49309057 ILT |
819 | local_symbol_mark_resolved (locsym); |
820 | } | |
821 | ||
822 | return final_val; | |
823 | } | |
824 | ||
252b5132 RH |
825 | if (symp->sy_resolved) |
826 | { | |
827 | if (symp->sy_value.X_op == O_constant) | |
828 | return (valueT) symp->sy_value.X_add_number; | |
829 | else | |
830 | return 0; | |
831 | } | |
832 | ||
833 | resolved = 0; | |
834 | final_seg = S_GET_SEGMENT (symp); | |
835 | ||
836 | if (symp->sy_resolving) | |
837 | { | |
6386f3a7 | 838 | if (finalize_syms) |
0e389e77 | 839 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 840 | S_GET_NAME (symp)); |
252b5132 RH |
841 | final_val = 0; |
842 | resolved = 1; | |
843 | } | |
844 | else | |
845 | { | |
846 | symbolS *add_symbol, *op_symbol; | |
847 | offsetT left, right; | |
848 | segT seg_left, seg_right; | |
849 | operatorT op; | |
2d034539 | 850 | int move_seg_ok; |
252b5132 RH |
851 | |
852 | symp->sy_resolving = 1; | |
853 | ||
854 | /* Help out with CSE. */ | |
855 | add_symbol = symp->sy_value.X_add_symbol; | |
856 | op_symbol = symp->sy_value.X_op_symbol; | |
857 | final_val = symp->sy_value.X_add_number; | |
858 | op = symp->sy_value.X_op; | |
859 | ||
860 | switch (op) | |
861 | { | |
862 | default: | |
863 | BAD_CASE (op); | |
864 | break; | |
865 | ||
866 | case O_absent: | |
867 | final_val = 0; | |
868 | /* Fall through. */ | |
869 | ||
870 | case O_constant: | |
bea9907b | 871 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
872 | if (final_seg == expr_section) |
873 | final_seg = absolute_section; | |
874 | resolved = 1; | |
875 | break; | |
876 | ||
877 | case O_symbol: | |
878 | case O_symbol_rva: | |
6386f3a7 | 879 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
880 | seg_left = S_GET_SEGMENT (add_symbol); |
881 | if (finalize_syms) | |
882 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 883 | |
e0890092 | 884 | do_symbol: |
252b5132 RH |
885 | if (symp->sy_mri_common) |
886 | { | |
887 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
888 | relocation routines are going to handle it specially. |
889 | Don't change the value. */ | |
49309057 | 890 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
891 | break; |
892 | } | |
893 | ||
6386f3a7 | 894 | if (finalize_syms && final_val == 0) |
49309057 ILT |
895 | { |
896 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
897 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
898 | add_symbol); | |
899 | copy_symbol_attributes (symp, add_symbol); | |
900 | } | |
252b5132 | 901 | |
e0890092 AM |
902 | /* If we have equated this symbol to an undefined or common |
903 | symbol, keep X_op set to O_symbol, and don't change | |
904 | X_add_number. This permits the routine which writes out | |
905 | relocation to detect this case, and convert the | |
906 | relocation to be against the symbol to which this symbol | |
907 | is equated. */ | |
977cdf5a | 908 | if (! S_IS_DEFINED (add_symbol) |
7be1c489 | 909 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
910 | || S_IS_WEAK (add_symbol) |
911 | #endif | |
912 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 913 | { |
6386f3a7 | 914 | if (finalize_syms) |
252b5132 | 915 | { |
252b5132 RH |
916 | symp->sy_value.X_op = O_symbol; |
917 | symp->sy_value.X_add_symbol = add_symbol; | |
918 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
919 | /* Use X_op_symbol as a flag. */ |
920 | symp->sy_value.X_op_symbol = add_symbol; | |
921 | final_seg = seg_left; | |
252b5132 RH |
922 | } |
923 | final_val = 0; | |
49309057 | 924 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 925 | symp->sy_resolving = 0; |
252b5132 RH |
926 | goto exit_dont_set_value; |
927 | } | |
e0890092 AM |
928 | else if (finalize_syms && final_seg == expr_section |
929 | && seg_left != expr_section) | |
930 | { | |
931 | /* If the symbol is an expression symbol, do similarly | |
932 | as for undefined and common syms above. Handles | |
933 | "sym +/- expr" where "expr" cannot be evaluated | |
934 | immediately, and we want relocations to be against | |
935 | "sym", eg. because it is weak. */ | |
936 | symp->sy_value.X_op = O_symbol; | |
937 | symp->sy_value.X_add_symbol = add_symbol; | |
938 | symp->sy_value.X_add_number = final_val; | |
939 | symp->sy_value.X_op_symbol = add_symbol; | |
940 | final_seg = seg_left; | |
941 | final_val += symp->sy_frag->fr_address + left; | |
942 | resolved = symbol_resolved_p (add_symbol); | |
943 | symp->sy_resolving = 0; | |
944 | goto exit_dont_set_value; | |
945 | } | |
252b5132 RH |
946 | else |
947 | { | |
948 | final_val += symp->sy_frag->fr_address + left; | |
949 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 950 | final_seg = seg_left; |
252b5132 RH |
951 | } |
952 | ||
49309057 | 953 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
954 | break; |
955 | ||
956 | case O_uminus: | |
957 | case O_bit_not: | |
958 | case O_logical_not: | |
6386f3a7 | 959 | left = resolve_symbol_value (add_symbol); |
784b640d | 960 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 961 | |
0909233e AM |
962 | /* By reducing these to the relevant dyadic operator, we get |
963 | !S -> S == 0 permitted on anything, | |
964 | -S -> 0 - S only permitted on absolute | |
965 | ~S -> S ^ ~0 only permitted on absolute */ | |
966 | if (op != O_logical_not && seg_left != absolute_section | |
967 | && finalize_syms) | |
968 | report_op_error (symp, add_symbol, NULL); | |
1d3b2b27 | 969 | |
0909233e AM |
970 | if (final_seg == expr_section || final_seg == undefined_section) |
971 | final_seg = absolute_section; | |
1d3b2b27 | 972 | |
252b5132 RH |
973 | if (op == O_uminus) |
974 | left = -left; | |
975 | else if (op == O_logical_not) | |
976 | left = !left; | |
977 | else | |
978 | left = ~left; | |
979 | ||
980 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 981 | |
49309057 | 982 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
983 | break; |
984 | ||
985 | case O_multiply: | |
986 | case O_divide: | |
987 | case O_modulus: | |
988 | case O_left_shift: | |
989 | case O_right_shift: | |
990 | case O_bit_inclusive_or: | |
991 | case O_bit_or_not: | |
992 | case O_bit_exclusive_or: | |
993 | case O_bit_and: | |
994 | case O_add: | |
995 | case O_subtract: | |
996 | case O_eq: | |
997 | case O_ne: | |
998 | case O_lt: | |
999 | case O_le: | |
1000 | case O_ge: | |
1001 | case O_gt: | |
1002 | case O_logical_and: | |
1003 | case O_logical_or: | |
6386f3a7 AM |
1004 | left = resolve_symbol_value (add_symbol); |
1005 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1006 | seg_left = S_GET_SEGMENT (add_symbol); |
1007 | seg_right = S_GET_SEGMENT (op_symbol); | |
1008 | ||
1009 | /* Simplify addition or subtraction of a constant by folding the | |
1010 | constant into X_add_number. */ | |
e0890092 | 1011 | if (op == O_add) |
252b5132 RH |
1012 | { |
1013 | if (seg_right == absolute_section) | |
1014 | { | |
e0890092 | 1015 | final_val += right; |
252b5132 RH |
1016 | goto do_symbol; |
1017 | } | |
e0890092 | 1018 | else if (seg_left == absolute_section) |
252b5132 | 1019 | { |
252b5132 RH |
1020 | final_val += left; |
1021 | add_symbol = op_symbol; | |
1022 | left = right; | |
e0890092 AM |
1023 | seg_left = seg_right; |
1024 | goto do_symbol; | |
1025 | } | |
1026 | } | |
1027 | else if (op == O_subtract) | |
1028 | { | |
1029 | if (seg_right == absolute_section) | |
1030 | { | |
1031 | final_val -= right; | |
252b5132 RH |
1032 | goto do_symbol; |
1033 | } | |
1034 | } | |
1035 | ||
2d034539 | 1036 | move_seg_ok = 1; |
e0890092 AM |
1037 | /* Equality and non-equality tests are permitted on anything. |
1038 | Subtraction, and other comparison operators are permitted if | |
1039 | both operands are in the same section. Otherwise, both | |
1040 | operands must be absolute. We already handled the case of | |
1041 | addition or subtraction of a constant above. This will | |
1042 | probably need to be changed for an object file format which | |
2d034539 NC |
1043 | supports arbitrary expressions, such as IEEE-695. */ |
1044 | if (!(seg_left == absolute_section | |
0909233e AM |
1045 | && seg_right == absolute_section) |
1046 | && !(op == O_eq || op == O_ne) | |
1047 | && !((op == O_subtract | |
1048 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1049 | && seg_left == seg_right | |
1050 | && (seg_left != undefined_section | |
1051 | || add_symbol == op_symbol))) | |
2d034539 NC |
1052 | { |
1053 | /* Don't emit messages unless we're finalizing the symbol value, | |
1054 | otherwise we may get the same message multiple times. */ | |
1055 | if (finalize_syms) | |
1056 | report_op_error (symp, add_symbol, op_symbol); | |
1057 | /* However do not move the symbol into the absolute section | |
1058 | if it cannot currently be resolved - this would confuse | |
1059 | other parts of the assembler into believing that the | |
1060 | expression had been evaluated to zero. */ | |
1061 | else | |
1062 | move_seg_ok = 0; | |
1063 | } | |
1d3b2b27 | 1064 | |
2d034539 NC |
1065 | if (move_seg_ok |
1066 | && (final_seg == expr_section || final_seg == undefined_section)) | |
0909233e | 1067 | final_seg = absolute_section; |
252b5132 RH |
1068 | |
1069 | /* Check for division by zero. */ | |
1070 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1071 | { | |
1072 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1073 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1074 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1075 | { |
1076 | char *file; | |
1077 | unsigned int line; | |
1078 | ||
1079 | if (expr_symbol_where (symp, &file, &line)) | |
1080 | as_bad_where (file, line, _("division by zero")); | |
1081 | else | |
0e389e77 | 1082 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1083 | S_GET_NAME (symp)); |
1084 | } | |
1085 | ||
1086 | right = 1; | |
1087 | } | |
1088 | ||
1089 | switch (symp->sy_value.X_op) | |
1090 | { | |
1091 | case O_multiply: left *= right; break; | |
1092 | case O_divide: left /= right; break; | |
1093 | case O_modulus: left %= right; break; | |
1094 | case O_left_shift: left <<= right; break; | |
1095 | case O_right_shift: left >>= right; break; | |
1096 | case O_bit_inclusive_or: left |= right; break; | |
1097 | case O_bit_or_not: left |= ~right; break; | |
1098 | case O_bit_exclusive_or: left ^= right; break; | |
1099 | case O_bit_and: left &= right; break; | |
1100 | case O_add: left += right; break; | |
1101 | case O_subtract: left -= right; break; | |
e0890092 AM |
1102 | case O_eq: |
1103 | case O_ne: | |
1104 | left = (left == right && seg_left == seg_right | |
1105 | && (seg_left != undefined_section | |
1106 | || add_symbol == op_symbol) | |
1107 | ? ~ (offsetT) 0 : 0); | |
1108 | if (symp->sy_value.X_op == O_ne) | |
1109 | left = ~left; | |
1110 | break; | |
252b5132 RH |
1111 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1112 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1113 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1114 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1115 | case O_logical_and: left = left && right; break; | |
1116 | case O_logical_or: left = left || right; break; | |
1117 | default: abort (); | |
1118 | } | |
1119 | ||
1120 | final_val += symp->sy_frag->fr_address + left; | |
1121 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1122 | { |
1123 | if (seg_left == undefined_section | |
1124 | || seg_right == undefined_section) | |
1125 | final_seg = undefined_section; | |
1126 | else if (seg_left == absolute_section) | |
1127 | final_seg = seg_right; | |
1128 | else | |
1129 | final_seg = seg_left; | |
1130 | } | |
49309057 ILT |
1131 | resolved = (symbol_resolved_p (add_symbol) |
1132 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1133 | break; |
252b5132 RH |
1134 | |
1135 | case O_register: | |
1136 | case O_big: | |
1137 | case O_illegal: | |
1138 | /* Give an error (below) if not in expr_section. We don't | |
1139 | want to worry about expr_section symbols, because they | |
1140 | are fictional (they are created as part of expression | |
1141 | resolution), and any problems may not actually mean | |
1142 | anything. */ | |
1143 | break; | |
1144 | } | |
1145 | ||
1146 | symp->sy_resolving = 0; | |
1147 | } | |
1148 | ||
6386f3a7 | 1149 | if (finalize_syms) |
05bdb37e | 1150 | S_SET_VALUE (symp, final_val); |
252b5132 | 1151 | |
05bdb37e AM |
1152 | exit_dont_set_value: |
1153 | /* Always set the segment, even if not finalizing the value. | |
1154 | The segment is used to determine whether a symbol is defined. */ | |
05bdb37e | 1155 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1156 | |
252b5132 | 1157 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1158 | if (finalize_syms) |
252b5132 RH |
1159 | { |
1160 | if (resolved) | |
1161 | symp->sy_resolved = 1; | |
1162 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1163 | { | |
0e389e77 | 1164 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1165 | S_GET_NAME (symp)); |
252b5132 RH |
1166 | symp->sy_resolved = 1; |
1167 | } | |
1168 | } | |
1169 | ||
1170 | return final_val; | |
1171 | } | |
1172 | ||
74937d39 | 1173 | static void resolve_local_symbol (const char *, PTR); |
49309057 ILT |
1174 | |
1175 | /* A static function passed to hash_traverse. */ | |
1176 | ||
1177 | static void | |
74937d39 | 1178 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, PTR value) |
49309057 ILT |
1179 | { |
1180 | if (value != NULL) | |
6386f3a7 | 1181 | resolve_symbol_value (value); |
49309057 ILT |
1182 | } |
1183 | ||
49309057 ILT |
1184 | /* Resolve all local symbols. */ |
1185 | ||
1186 | void | |
74937d39 | 1187 | resolve_local_symbol_values (void) |
49309057 | 1188 | { |
49309057 | 1189 | hash_traverse (local_hash, resolve_local_symbol); |
49309057 ILT |
1190 | } |
1191 | ||
252b5132 RH |
1192 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1193 | They are *really* local. That is, they go out of scope whenever we see a | |
1194 | label that isn't local. Also, like fb labels, there can be multiple | |
1195 | instances of a dollar label. Therefor, we name encode each instance with | |
1196 | the instance number, keep a list of defined symbols separate from the real | |
1197 | symbol table, and we treat these buggers as a sparse array. */ | |
1198 | ||
1199 | static long *dollar_labels; | |
1200 | static long *dollar_label_instances; | |
1201 | static char *dollar_label_defines; | |
1202 | static unsigned long dollar_label_count; | |
1203 | static unsigned long dollar_label_max; | |
1204 | ||
7c743825 | 1205 | int |
74937d39 | 1206 | dollar_label_defined (long label) |
252b5132 RH |
1207 | { |
1208 | long *i; | |
1209 | ||
1210 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1211 | ||
1212 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1213 | if (*i == label) | |
1214 | return dollar_label_defines[i - dollar_labels]; | |
1215 | ||
7c743825 | 1216 | /* If we get here, label isn't defined. */ |
252b5132 | 1217 | return 0; |
7c743825 | 1218 | } |
252b5132 RH |
1219 | |
1220 | static long | |
74937d39 | 1221 | dollar_label_instance (long label) |
252b5132 RH |
1222 | { |
1223 | long *i; | |
1224 | ||
1225 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1226 | ||
1227 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1228 | if (*i == label) | |
1229 | return (dollar_label_instances[i - dollar_labels]); | |
1230 | ||
7c743825 KH |
1231 | /* If we get here, we haven't seen the label before. |
1232 | Therefore its instance count is zero. */ | |
252b5132 RH |
1233 | return 0; |
1234 | } | |
1235 | ||
7c743825 | 1236 | void |
74937d39 | 1237 | dollar_label_clear (void) |
252b5132 RH |
1238 | { |
1239 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1240 | } | |
1241 | ||
1242 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1243 | ||
7c743825 | 1244 | void |
74937d39 | 1245 | define_dollar_label (long label) |
252b5132 RH |
1246 | { |
1247 | long *i; | |
1248 | ||
1249 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1250 | if (*i == label) | |
1251 | { | |
1252 | ++dollar_label_instances[i - dollar_labels]; | |
1253 | dollar_label_defines[i - dollar_labels] = 1; | |
1254 | return; | |
1255 | } | |
1256 | ||
7c743825 | 1257 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1258 | |
1259 | if (dollar_labels == NULL) | |
1260 | { | |
1261 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1262 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1263 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1264 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1265 | dollar_label_count = 0; | |
1266 | } | |
1267 | else if (dollar_label_count == dollar_label_max) | |
1268 | { | |
1269 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1270 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1271 | dollar_label_max * sizeof (long)); | |
1272 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1273 | dollar_label_max * sizeof (long)); | |
1274 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1275 | } /* if we needed to grow */ |
252b5132 RH |
1276 | |
1277 | dollar_labels[dollar_label_count] = label; | |
1278 | dollar_label_instances[dollar_label_count] = 1; | |
1279 | dollar_label_defines[dollar_label_count] = 1; | |
1280 | ++dollar_label_count; | |
1281 | } | |
1282 | ||
7c743825 KH |
1283 | /* Caller must copy returned name: we re-use the area for the next name. |
1284 | ||
1285 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1286 | where n is the label number and m is the instance number. "L" makes | |
1287 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1288 | ordinary symbol SHOULD get the same name as a local label | |
1289 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1290 | ||
1291 | fb labels get the same treatment, except that ^B is used in place | |
1292 | of ^A. */ | |
1293 | ||
1294 | char * /* Return local label name. */ | |
74937d39 KH |
1295 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1296 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1297 | { |
1298 | long i; | |
7c743825 | 1299 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1300 | static char symbol_name_build[24]; |
1301 | register char *p; | |
1302 | register char *q; | |
7c743825 | 1303 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1304 | |
1305 | know (n >= 0); | |
1306 | know (augend == 0 || augend == 1); | |
1307 | p = symbol_name_build; | |
f84dd1f0 NC |
1308 | #ifdef LOCAL_LABEL_PREFIX |
1309 | *p++ = LOCAL_LABEL_PREFIX; | |
1310 | #endif | |
252b5132 RH |
1311 | *p++ = 'L'; |
1312 | ||
7c743825 KH |
1313 | /* Next code just does sprintf( {}, "%d", n); */ |
1314 | /* Label number. */ | |
252b5132 RH |
1315 | q = symbol_name_temporary; |
1316 | for (*q++ = 0, i = n; i; ++q) | |
1317 | { | |
1318 | *q = i % 10 + '0'; | |
1319 | i /= 10; | |
1320 | } | |
1321 | while ((*p = *--q) != '\0') | |
1322 | ++p; | |
1323 | ||
aa257fcd | 1324 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1325 | |
7c743825 | 1326 | /* Instance number. */ |
252b5132 RH |
1327 | q = symbol_name_temporary; |
1328 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1329 | { | |
1330 | *q = i % 10 + '0'; | |
1331 | i /= 10; | |
1332 | } | |
1333 | while ((*p++ = *--q) != '\0');; | |
1334 | ||
7c743825 | 1335 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1336 | return symbol_name_build; |
1337 | } | |
1338 | ||
47eebc20 | 1339 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1340 | is any decimal digit. Refer to them with |
1341 | "nb" for previous (backward) n: | |
1342 | or "nf" for next (forward) n:. | |
1343 | ||
1344 | We do a little better and let n be any number, not just a single digit, but | |
1345 | since the other guy's assembler only does ten, we treat the first ten | |
1346 | specially. | |
1347 | ||
1348 | Like someone else's assembler, we have one set of local label counters for | |
1349 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1350 | implies that one can refer to a label in another segment, and indeed some | |
1351 | crufty compilers have done just that. | |
1352 | ||
1353 | Since there could be a LOT of these things, treat them as a sparse | |
1354 | array. */ | |
252b5132 RH |
1355 | |
1356 | #define FB_LABEL_SPECIAL (10) | |
1357 | ||
1358 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1359 | static long *fb_labels; | |
1360 | static long *fb_label_instances; | |
1361 | static long fb_label_count; | |
1362 | static long fb_label_max; | |
1363 | ||
7c743825 | 1364 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1365 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1366 | ||
7c743825 | 1367 | static void |
74937d39 | 1368 | fb_label_init (void) |
252b5132 RH |
1369 | { |
1370 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1371 | } |
252b5132 | 1372 | |
7c743825 KH |
1373 | /* Add one to the instance number of this fb label. */ |
1374 | ||
1375 | void | |
74937d39 | 1376 | fb_label_instance_inc (long label) |
252b5132 RH |
1377 | { |
1378 | long *i; | |
1379 | ||
1380 | if (label < FB_LABEL_SPECIAL) | |
1381 | { | |
1382 | ++fb_low_counter[label]; | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | if (fb_labels != NULL) | |
1387 | { | |
1388 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1389 | i < fb_labels + fb_label_count; ++i) | |
1390 | { | |
1391 | if (*i == label) | |
1392 | { | |
1393 | ++fb_label_instances[i - fb_labels]; | |
1394 | return; | |
7c743825 KH |
1395 | } /* if we find it */ |
1396 | } /* for each existing label */ | |
252b5132 RH |
1397 | } |
1398 | ||
7c743825 | 1399 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1400 | |
1401 | if (fb_labels == NULL) | |
1402 | { | |
1403 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1404 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1405 | fb_label_max = FB_LABEL_BUMP_BY; | |
1406 | fb_label_count = FB_LABEL_SPECIAL; | |
1407 | ||
1408 | } | |
1409 | else if (fb_label_count == fb_label_max) | |
1410 | { | |
1411 | fb_label_max += FB_LABEL_BUMP_BY; | |
1412 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1413 | fb_label_max * sizeof (long)); | |
1414 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1415 | fb_label_max * sizeof (long)); | |
7c743825 | 1416 | } /* if we needed to grow */ |
252b5132 RH |
1417 | |
1418 | fb_labels[fb_label_count] = label; | |
1419 | fb_label_instances[fb_label_count] = 1; | |
1420 | ++fb_label_count; | |
1421 | } | |
1422 | ||
7c743825 | 1423 | static long |
74937d39 | 1424 | fb_label_instance (long label) |
252b5132 RH |
1425 | { |
1426 | long *i; | |
1427 | ||
1428 | if (label < FB_LABEL_SPECIAL) | |
1429 | { | |
1430 | return (fb_low_counter[label]); | |
1431 | } | |
1432 | ||
1433 | if (fb_labels != NULL) | |
1434 | { | |
1435 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1436 | i < fb_labels + fb_label_count; ++i) | |
1437 | { | |
1438 | if (*i == label) | |
1439 | { | |
1440 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1441 | } /* if we find it */ |
1442 | } /* for each existing label */ | |
252b5132 RH |
1443 | } |
1444 | ||
1445 | /* We didn't find the label, so this must be a reference to the | |
1446 | first instance. */ | |
1447 | return 0; | |
1448 | } | |
1449 | ||
7c743825 KH |
1450 | /* Caller must copy returned name: we re-use the area for the next name. |
1451 | ||
1452 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1453 | where n is the label number and m is the instance number. "L" makes | |
1454 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1455 | ordinary symbol SHOULD get the same name as a local label | |
1456 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1457 | ||
1458 | dollar labels get the same treatment, except that ^A is used in | |
1459 | place of ^B. */ | |
1460 | ||
1461 | char * /* Return local label name. */ | |
74937d39 KH |
1462 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1463 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1464 | { |
1465 | long i; | |
7c743825 | 1466 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1467 | static char symbol_name_build[24]; |
1468 | register char *p; | |
1469 | register char *q; | |
7c743825 | 1470 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1471 | |
1472 | know (n >= 0); | |
a76903bf | 1473 | #ifdef TC_MMIX |
71ba24a1 | 1474 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1475 | #else |
71ba24a1 | 1476 | know ((unsigned long) augend <= 1); |
a76903bf | 1477 | #endif |
252b5132 | 1478 | p = symbol_name_build; |
aa257fcd NC |
1479 | #ifdef LOCAL_LABEL_PREFIX |
1480 | *p++ = LOCAL_LABEL_PREFIX; | |
1481 | #endif | |
252b5132 RH |
1482 | *p++ = 'L'; |
1483 | ||
7c743825 KH |
1484 | /* Next code just does sprintf( {}, "%d", n); */ |
1485 | /* Label number. */ | |
252b5132 RH |
1486 | q = symbol_name_temporary; |
1487 | for (*q++ = 0, i = n; i; ++q) | |
1488 | { | |
1489 | *q = i % 10 + '0'; | |
1490 | i /= 10; | |
1491 | } | |
1492 | while ((*p = *--q) != '\0') | |
1493 | ++p; | |
1494 | ||
aa257fcd | 1495 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1496 | |
7c743825 | 1497 | /* Instance number. */ |
252b5132 RH |
1498 | q = symbol_name_temporary; |
1499 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1500 | { | |
1501 | *q = i % 10 + '0'; | |
1502 | i /= 10; | |
1503 | } | |
1504 | while ((*p++ = *--q) != '\0');; | |
1505 | ||
7c743825 | 1506 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1507 | return (symbol_name_build); |
7c743825 | 1508 | } |
252b5132 | 1509 | |
7c743825 KH |
1510 | /* Decode name that may have been generated by foo_label_name() above. |
1511 | If the name wasn't generated by foo_label_name(), then return it | |
1512 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1513 | |
1514 | char * | |
74937d39 | 1515 | decode_local_label_name (char *s) |
252b5132 RH |
1516 | { |
1517 | char *p; | |
1518 | char *symbol_decode; | |
1519 | int label_number; | |
1520 | int instance_number; | |
1521 | char *type; | |
d95767bf | 1522 | const char *message_format; |
aa257fcd | 1523 | int index = 0; |
43ad3147 | 1524 | |
aa257fcd NC |
1525 | #ifdef LOCAL_LABEL_PREFIX |
1526 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1527 | ++index; | |
1528 | #endif | |
43ad3147 | 1529 | |
aa257fcd | 1530 | if (s[index] != 'L') |
252b5132 RH |
1531 | return s; |
1532 | ||
3882b010 | 1533 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1534 | label_number = (10 * label_number) + *p - '0'; |
1535 | ||
aa257fcd | 1536 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1537 | type = "dollar"; |
aa257fcd | 1538 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1539 | type = "fb"; |
1540 | else | |
1541 | return s; | |
1542 | ||
3882b010 | 1543 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1544 | instance_number = (10 * instance_number) + *p - '0'; |
1545 | ||
d95767bf | 1546 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1547 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1548 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1549 | ||
1550 | return symbol_decode; | |
1551 | } | |
1552 | ||
1553 | /* Get the value of a symbol. */ | |
1554 | ||
1555 | valueT | |
74937d39 | 1556 | S_GET_VALUE (symbolS *s) |
252b5132 | 1557 | { |
49309057 | 1558 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1559 | return resolve_symbol_value (s); |
49309057 | 1560 | |
ac62c346 | 1561 | if (!s->sy_resolved) |
e46d99eb | 1562 | { |
6386f3a7 AM |
1563 | valueT val = resolve_symbol_value (s); |
1564 | if (!finalize_syms) | |
e46d99eb AM |
1565 | return val; |
1566 | } | |
252b5132 RH |
1567 | if (s->sy_value.X_op != O_constant) |
1568 | { | |
1569 | static symbolS *recur; | |
1570 | ||
1571 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1d3b2b27 AM |
1572 | may call S_GET_VALUE. We use a static symbol to avoid the |
1573 | immediate recursion. */ | |
252b5132 RH |
1574 | if (recur == s) |
1575 | return (valueT) s->sy_value.X_add_number; | |
1576 | recur = s; | |
1577 | if (! s->sy_resolved | |
1578 | || s->sy_value.X_op != O_symbol | |
1579 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1580 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1581 | S_GET_NAME (s)); |
1582 | recur = NULL; | |
1583 | } | |
1584 | return (valueT) s->sy_value.X_add_number; | |
1585 | } | |
1586 | ||
1587 | /* Set the value of a symbol. */ | |
1588 | ||
1589 | void | |
74937d39 | 1590 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1591 | { |
49309057 ILT |
1592 | if (LOCAL_SYMBOL_CHECK (s)) |
1593 | { | |
bd780143 | 1594 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1595 | return; |
1596 | } | |
1597 | ||
252b5132 RH |
1598 | s->sy_value.X_op = O_constant; |
1599 | s->sy_value.X_add_number = (offsetT) val; | |
1600 | s->sy_value.X_unsigned = 0; | |
1601 | } | |
1602 | ||
1603 | void | |
74937d39 | 1604 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1605 | { |
49309057 | 1606 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1607 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1608 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1609 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1610 | |
252b5132 RH |
1611 | /* In an expression, transfer the settings of these flags. |
1612 | The user can override later, of course. */ | |
1613 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1614 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
252b5132 RH |
1615 | |
1616 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1617 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1618 | #endif | |
1619 | } | |
1620 | ||
252b5132 | 1621 | int |
74937d39 | 1622 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1623 | { |
49309057 ILT |
1624 | flagword flags; |
1625 | ||
1626 | if (LOCAL_SYMBOL_CHECK (s)) | |
1627 | return 0; | |
1628 | ||
1629 | flags = s->bsym->flags; | |
252b5132 RH |
1630 | |
1631 | return (flags & BSF_FUNCTION) != 0; | |
1632 | } | |
1633 | ||
1634 | int | |
74937d39 | 1635 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 1636 | { |
49309057 ILT |
1637 | flagword flags; |
1638 | ||
1639 | if (LOCAL_SYMBOL_CHECK (s)) | |
1640 | return 0; | |
1641 | ||
1642 | flags = s->bsym->flags; | |
252b5132 | 1643 | |
7c743825 | 1644 | /* Sanity check. */ |
252b5132 RH |
1645 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1646 | abort (); | |
1647 | ||
1648 | return (flags & BSF_GLOBAL) != 0; | |
1649 | } | |
1650 | ||
1651 | int | |
74937d39 | 1652 | S_IS_WEAK (symbolS *s) |
252b5132 | 1653 | { |
49309057 ILT |
1654 | if (LOCAL_SYMBOL_CHECK (s)) |
1655 | return 0; | |
252b5132 RH |
1656 | return (s->bsym->flags & BSF_WEAK) != 0; |
1657 | } | |
1658 | ||
1659 | int | |
74937d39 | 1660 | S_IS_COMMON (symbolS *s) |
252b5132 | 1661 | { |
49309057 ILT |
1662 | if (LOCAL_SYMBOL_CHECK (s)) |
1663 | return 0; | |
252b5132 RH |
1664 | return bfd_is_com_section (s->bsym->section); |
1665 | } | |
1666 | ||
1667 | int | |
74937d39 | 1668 | S_IS_DEFINED (symbolS *s) |
252b5132 | 1669 | { |
49309057 ILT |
1670 | if (LOCAL_SYMBOL_CHECK (s)) |
1671 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1672 | return s->bsym->section != undefined_section; |
1673 | } | |
1674 | ||
a161fe53 AM |
1675 | |
1676 | #ifndef EXTERN_FORCE_RELOC | |
1677 | #define EXTERN_FORCE_RELOC IS_ELF | |
1678 | #endif | |
1679 | ||
1680 | /* Return true for symbols that should not be reduced to section | |
1681 | symbols or eliminated from expressions, because they may be | |
1682 | overridden by the linker. */ | |
1683 | int | |
74937d39 | 1684 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
1685 | { |
1686 | if (LOCAL_SYMBOL_CHECK (s)) | |
1687 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
1688 | ||
ae6063d4 AM |
1689 | return ((strict |
1690 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
1691 | || (EXTERN_FORCE_RELOC | |
1692 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
a161fe53 AM |
1693 | || s->bsym->section == undefined_section |
1694 | || bfd_is_com_section (s->bsym->section)); | |
1695 | } | |
1696 | ||
252b5132 | 1697 | int |
74937d39 | 1698 | S_IS_DEBUG (symbolS *s) |
252b5132 | 1699 | { |
49309057 ILT |
1700 | if (LOCAL_SYMBOL_CHECK (s)) |
1701 | return 0; | |
252b5132 RH |
1702 | if (s->bsym->flags & BSF_DEBUGGING) |
1703 | return 1; | |
1704 | return 0; | |
1705 | } | |
1706 | ||
1707 | int | |
74937d39 | 1708 | S_IS_LOCAL (symbolS *s) |
252b5132 | 1709 | { |
49309057 | 1710 | flagword flags; |
252b5132 RH |
1711 | const char *name; |
1712 | ||
49309057 ILT |
1713 | if (LOCAL_SYMBOL_CHECK (s)) |
1714 | return 1; | |
1715 | ||
1716 | flags = s->bsym->flags; | |
1717 | ||
7c743825 | 1718 | /* Sanity check. */ |
252b5132 RH |
1719 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1720 | abort (); | |
1721 | ||
1722 | if (bfd_get_section (s->bsym) == reg_section) | |
1723 | return 1; | |
1724 | ||
1725 | if (flag_strip_local_absolute | |
bb82af9f NC |
1726 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
1727 | the source file even when the object file is stripped. */ | |
1728 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
1729 | && bfd_get_section (s->bsym) == absolute_section) |
1730 | return 1; | |
1731 | ||
1732 | name = S_GET_NAME (s); | |
1733 | return (name != NULL | |
1734 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1735 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1736 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1737 | || (! flag_keep_locals |
1738 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1739 | || (flag_mri | |
1740 | && name[0] == '?' | |
1741 | && name[1] == '?'))))); | |
1742 | } | |
1743 | ||
252b5132 | 1744 | int |
74937d39 | 1745 | S_IS_STABD (symbolS *s) |
252b5132 RH |
1746 | { |
1747 | return S_GET_NAME (s) == 0; | |
1748 | } | |
1749 | ||
9758f3fc | 1750 | const char * |
74937d39 | 1751 | S_GET_NAME (symbolS *s) |
252b5132 | 1752 | { |
49309057 ILT |
1753 | if (LOCAL_SYMBOL_CHECK (s)) |
1754 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1755 | return s->bsym->name; |
1756 | } | |
1757 | ||
1758 | segT | |
74937d39 | 1759 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 1760 | { |
49309057 ILT |
1761 | if (LOCAL_SYMBOL_CHECK (s)) |
1762 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1763 | return s->bsym->section; |
1764 | } | |
1765 | ||
1766 | void | |
74937d39 | 1767 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
1768 | { |
1769 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1770 | faults assigning back to const global symbols such as *ABS*, but it | |
1771 | shouldn't happen anyway. */ | |
1772 | ||
49309057 ILT |
1773 | if (LOCAL_SYMBOL_CHECK (s)) |
1774 | { | |
1775 | if (seg == reg_section) | |
1776 | s = local_symbol_convert ((struct local_symbol *) s); | |
1777 | else | |
1778 | { | |
1779 | ((struct local_symbol *) s)->lsy_section = seg; | |
1780 | return; | |
1781 | } | |
1782 | } | |
1783 | ||
252b5132 RH |
1784 | if (s->bsym->flags & BSF_SECTION_SYM) |
1785 | { | |
1786 | if (s->bsym->section != seg) | |
7c743825 | 1787 | abort (); |
252b5132 RH |
1788 | } |
1789 | else | |
1790 | s->bsym->section = seg; | |
1791 | } | |
1792 | ||
1793 | void | |
74937d39 | 1794 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 1795 | { |
49309057 ILT |
1796 | if (LOCAL_SYMBOL_CHECK (s)) |
1797 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1798 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1799 | { | |
1800 | /* Let .weak override .global. */ | |
1801 | return; | |
1802 | } | |
4d7c34bf NC |
1803 | if (s->bsym->flags & BSF_SECTION_SYM) |
1804 | { | |
1805 | char * file; | |
1806 | unsigned int line; | |
d1a6c242 | 1807 | |
4d7c34bf NC |
1808 | /* Do not reassign section symbols. */ |
1809 | as_where (& file, & line); | |
1810 | as_warn_where (file, line, | |
0e389e77 | 1811 | _("section symbols are already global")); |
4d7c34bf NC |
1812 | return; |
1813 | } | |
252b5132 | 1814 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1815 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a NC |
1816 | |
1817 | #ifdef USE_UNIQUE | |
1818 | if (! an_external_name && S_GET_NAME(s)[0] != '.') | |
1819 | an_external_name = S_GET_NAME (s); | |
1820 | #endif | |
252b5132 RH |
1821 | } |
1822 | ||
1823 | void | |
74937d39 | 1824 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 1825 | { |
49309057 ILT |
1826 | if (LOCAL_SYMBOL_CHECK (s)) |
1827 | return; | |
252b5132 RH |
1828 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1829 | { | |
1830 | /* Let .weak override. */ | |
1831 | return; | |
1832 | } | |
1833 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1834 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1835 | } |
1836 | ||
1837 | void | |
74937d39 | 1838 | S_SET_WEAK (symbolS *s) |
252b5132 | 1839 | { |
49309057 ILT |
1840 | if (LOCAL_SYMBOL_CHECK (s)) |
1841 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1842 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1843 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1844 | } |
1845 | ||
00f7efb6 | 1846 | void |
74937d39 | 1847 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
1848 | { |
1849 | if (LOCAL_SYMBOL_CHECK (s)) | |
1850 | s = local_symbol_convert ((struct local_symbol *) s); | |
1851 | if (bfd_is_com_section (s->bsym->section) | |
1852 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
1853 | return; | |
1854 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
1855 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
1856 | as_bad (_("Accessing function `%s' as thread-local object"), | |
1857 | S_GET_NAME (s)); | |
1858 | else if (! bfd_is_und_section (s->bsym->section) | |
1859 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
1860 | as_bad (_("Accessing `%s' as thread-local object"), | |
1861 | S_GET_NAME (s)); | |
1862 | } | |
1863 | ||
252b5132 | 1864 | void |
977cdf5a | 1865 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 1866 | { |
49309057 ILT |
1867 | if (LOCAL_SYMBOL_CHECK (s)) |
1868 | { | |
1869 | ((struct local_symbol *) s)->lsy_name = name; | |
1870 | return; | |
1871 | } | |
252b5132 RH |
1872 | s->bsym->name = name; |
1873 | } | |
49309057 ILT |
1874 | |
1875 | /* Return the previous symbol in a chain. */ | |
1876 | ||
1877 | symbolS * | |
74937d39 | 1878 | symbol_previous (symbolS *s) |
49309057 ILT |
1879 | { |
1880 | if (LOCAL_SYMBOL_CHECK (s)) | |
1881 | abort (); | |
1882 | return s->sy_previous; | |
1883 | } | |
1884 | ||
49309057 ILT |
1885 | /* Return the next symbol in a chain. */ |
1886 | ||
1887 | symbolS * | |
74937d39 | 1888 | symbol_next (symbolS *s) |
49309057 ILT |
1889 | { |
1890 | if (LOCAL_SYMBOL_CHECK (s)) | |
1891 | abort (); | |
1892 | return s->sy_next; | |
1893 | } | |
1894 | ||
1895 | /* Return a pointer to the value of a symbol as an expression. */ | |
1896 | ||
1897 | expressionS * | |
74937d39 | 1898 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
1899 | { |
1900 | if (LOCAL_SYMBOL_CHECK (s)) | |
1901 | s = local_symbol_convert ((struct local_symbol *) s); | |
1902 | return &s->sy_value; | |
1903 | } | |
1904 | ||
1905 | /* Set the value of a symbol to an expression. */ | |
1906 | ||
1907 | void | |
74937d39 | 1908 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
1909 | { |
1910 | if (LOCAL_SYMBOL_CHECK (s)) | |
1911 | s = local_symbol_convert ((struct local_symbol *) s); | |
1912 | s->sy_value = *exp; | |
1913 | } | |
1914 | ||
be95a9c1 AM |
1915 | /* Return a pointer to the X_add_number component of a symbol. */ |
1916 | ||
514d955d | 1917 | offsetT * |
be95a9c1 AM |
1918 | symbol_X_add_number (symbolS *s) |
1919 | { | |
be95a9c1 | 1920 | if (LOCAL_SYMBOL_CHECK (s)) |
514d955d | 1921 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 | 1922 | |
514d955d | 1923 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
1924 | } |
1925 | ||
b7d6ed97 RH |
1926 | /* Set the value of SYM to the current position in the current segment. */ |
1927 | ||
1928 | void | |
74937d39 | 1929 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
1930 | { |
1931 | S_SET_SEGMENT (sym, now_seg); | |
1932 | S_SET_VALUE (sym, frag_now_fix ()); | |
1933 | symbol_set_frag (sym, frag_now); | |
1934 | } | |
1935 | ||
49309057 ILT |
1936 | /* Set the frag of a symbol. */ |
1937 | ||
1938 | void | |
74937d39 | 1939 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 ILT |
1940 | { |
1941 | if (LOCAL_SYMBOL_CHECK (s)) | |
1942 | { | |
1943 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
1944 | return; | |
1945 | } | |
1946 | s->sy_frag = f; | |
1947 | } | |
1948 | ||
1949 | /* Return the frag of a symbol. */ | |
1950 | ||
1951 | fragS * | |
74937d39 | 1952 | symbol_get_frag (symbolS *s) |
49309057 ILT |
1953 | { |
1954 | if (LOCAL_SYMBOL_CHECK (s)) | |
1955 | return local_symbol_get_frag ((struct local_symbol *) s); | |
1956 | return s->sy_frag; | |
1957 | } | |
1958 | ||
1959 | /* Mark a symbol as having been used. */ | |
1960 | ||
1961 | void | |
74937d39 | 1962 | symbol_mark_used (symbolS *s) |
49309057 ILT |
1963 | { |
1964 | if (LOCAL_SYMBOL_CHECK (s)) | |
1965 | return; | |
1966 | s->sy_used = 1; | |
1967 | } | |
1968 | ||
1969 | /* Clear the mark of whether a symbol has been used. */ | |
1970 | ||
1971 | void | |
74937d39 | 1972 | symbol_clear_used (symbolS *s) |
49309057 ILT |
1973 | { |
1974 | if (LOCAL_SYMBOL_CHECK (s)) | |
1975 | s = local_symbol_convert ((struct local_symbol *) s); | |
1976 | s->sy_used = 0; | |
1977 | } | |
1978 | ||
1979 | /* Return whether a symbol has been used. */ | |
1980 | ||
1981 | int | |
74937d39 | 1982 | symbol_used_p (symbolS *s) |
49309057 ILT |
1983 | { |
1984 | if (LOCAL_SYMBOL_CHECK (s)) | |
1985 | return 1; | |
1986 | return s->sy_used; | |
1987 | } | |
1988 | ||
1989 | /* Mark a symbol as having been used in a reloc. */ | |
1990 | ||
1991 | void | |
74937d39 | 1992 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
1993 | { |
1994 | if (LOCAL_SYMBOL_CHECK (s)) | |
1995 | s = local_symbol_convert ((struct local_symbol *) s); | |
1996 | s->sy_used_in_reloc = 1; | |
1997 | } | |
1998 | ||
1999 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2000 | ||
2001 | void | |
74937d39 | 2002 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2003 | { |
2004 | if (LOCAL_SYMBOL_CHECK (s)) | |
2005 | return; | |
2006 | s->sy_used_in_reloc = 0; | |
2007 | } | |
2008 | ||
2009 | /* Return whether a symbol has been used in a reloc. */ | |
2010 | ||
2011 | int | |
74937d39 | 2012 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2013 | { |
2014 | if (LOCAL_SYMBOL_CHECK (s)) | |
2015 | return 0; | |
2016 | return s->sy_used_in_reloc; | |
2017 | } | |
2018 | ||
2019 | /* Mark a symbol as an MRI common symbol. */ | |
2020 | ||
2021 | void | |
74937d39 | 2022 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2023 | { |
2024 | if (LOCAL_SYMBOL_CHECK (s)) | |
2025 | s = local_symbol_convert ((struct local_symbol *) s); | |
2026 | s->sy_mri_common = 1; | |
2027 | } | |
2028 | ||
2029 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2030 | ||
2031 | void | |
74937d39 | 2032 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2033 | { |
2034 | if (LOCAL_SYMBOL_CHECK (s)) | |
2035 | return; | |
2036 | s->sy_mri_common = 0; | |
2037 | } | |
2038 | ||
2039 | /* Return whether a symbol is an MRI common symbol. */ | |
2040 | ||
2041 | int | |
74937d39 | 2042 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2043 | { |
2044 | if (LOCAL_SYMBOL_CHECK (s)) | |
2045 | return 0; | |
2046 | return s->sy_mri_common; | |
2047 | } | |
2048 | ||
2049 | /* Mark a symbol as having been written. */ | |
2050 | ||
2051 | void | |
74937d39 | 2052 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2053 | { |
2054 | if (LOCAL_SYMBOL_CHECK (s)) | |
2055 | return; | |
2056 | s->written = 1; | |
2057 | } | |
2058 | ||
2059 | /* Clear the mark of whether a symbol has been written. */ | |
2060 | ||
2061 | void | |
74937d39 | 2062 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2063 | { |
2064 | if (LOCAL_SYMBOL_CHECK (s)) | |
2065 | return; | |
2066 | s->written = 0; | |
2067 | } | |
2068 | ||
2069 | /* Return whether a symbol has been written. */ | |
2070 | ||
2071 | int | |
74937d39 | 2072 | symbol_written_p (symbolS *s) |
49309057 ILT |
2073 | { |
2074 | if (LOCAL_SYMBOL_CHECK (s)) | |
2075 | return 0; | |
2076 | return s->written; | |
2077 | } | |
2078 | ||
2079 | /* Mark a symbol has having been resolved. */ | |
2080 | ||
2081 | void | |
74937d39 | 2082 | symbol_mark_resolved (symbolS *s) |
49309057 ILT |
2083 | { |
2084 | if (LOCAL_SYMBOL_CHECK (s)) | |
2085 | { | |
2086 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2087 | return; | |
2088 | } | |
2089 | s->sy_resolved = 1; | |
2090 | } | |
2091 | ||
2092 | /* Return whether a symbol has been resolved. */ | |
2093 | ||
2094 | int | |
74937d39 | 2095 | symbol_resolved_p (symbolS *s) |
49309057 ILT |
2096 | { |
2097 | if (LOCAL_SYMBOL_CHECK (s)) | |
2098 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
2099 | return s->sy_resolved; | |
2100 | } | |
2101 | ||
2102 | /* Return whether a symbol is a section symbol. */ | |
2103 | ||
2104 | int | |
74937d39 | 2105 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2106 | { |
2107 | if (LOCAL_SYMBOL_CHECK (s)) | |
2108 | return 0; | |
49309057 | 2109 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; |
49309057 ILT |
2110 | } |
2111 | ||
2112 | /* Return whether a symbol is equated to another symbol. */ | |
2113 | ||
2114 | int | |
74937d39 | 2115 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2116 | { |
2117 | if (LOCAL_SYMBOL_CHECK (s)) | |
2118 | return 0; | |
2119 | return s->sy_value.X_op == O_symbol; | |
2120 | } | |
2121 | ||
e0890092 AM |
2122 | /* Return whether a symbol is equated to another symbol, and should be |
2123 | treated specially when writing out relocs. */ | |
2124 | ||
2125 | int | |
74937d39 | 2126 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2127 | { |
2128 | if (LOCAL_SYMBOL_CHECK (s)) | |
2129 | return 0; | |
2130 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2131 | resolve_symbol_value to flag expression syms that have been | |
2132 | equated. */ | |
2133 | return (s->sy_value.X_op == O_symbol | |
7be1c489 | 2134 | #if defined (OBJ_COFF) && defined (TE_PE) |
977cdf5a NC |
2135 | && ! S_IS_WEAK (s) |
2136 | #endif | |
e0890092 AM |
2137 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) |
2138 | || ! S_IS_DEFINED (s) | |
2139 | || S_IS_COMMON (s))); | |
2140 | } | |
2141 | ||
49309057 ILT |
2142 | /* Return whether a symbol has a constant value. */ |
2143 | ||
2144 | int | |
74937d39 | 2145 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2146 | { |
2147 | if (LOCAL_SYMBOL_CHECK (s)) | |
2148 | return 1; | |
2149 | return s->sy_value.X_op == O_constant; | |
2150 | } | |
2151 | ||
49309057 ILT |
2152 | /* Return the BFD symbol for a symbol. */ |
2153 | ||
2154 | asymbol * | |
74937d39 | 2155 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2156 | { |
2157 | if (LOCAL_SYMBOL_CHECK (s)) | |
2158 | s = local_symbol_convert ((struct local_symbol *) s); | |
2159 | return s->bsym; | |
2160 | } | |
2161 | ||
2162 | /* Set the BFD symbol for a symbol. */ | |
2163 | ||
2164 | void | |
74937d39 | 2165 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2166 | { |
2167 | if (LOCAL_SYMBOL_CHECK (s)) | |
2168 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2169 | /* Usually, it is harmless to reset a symbol to a BFD section |
2170 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2171 | of an old symbol with the newly created section symbol. But when | |
2172 | we have multiple sections with the same name, the newly created | |
2173 | section may have the same name as an old section. We check if the | |
2174 | old symbol has been already marked as a section symbol before | |
2175 | resetting it. */ | |
2176 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2177 | s->bsym = bsym; | |
2178 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2179 | } |
2180 | ||
49309057 ILT |
2181 | #ifdef OBJ_SYMFIELD_TYPE |
2182 | ||
2183 | /* Get a pointer to the object format information for a symbol. */ | |
2184 | ||
2185 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2186 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2187 | { |
2188 | if (LOCAL_SYMBOL_CHECK (s)) | |
2189 | s = local_symbol_convert ((struct local_symbol *) s); | |
2190 | return &s->sy_obj; | |
2191 | } | |
2192 | ||
2193 | /* Set the object format information for a symbol. */ | |
2194 | ||
2195 | void | |
74937d39 | 2196 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2197 | { |
2198 | if (LOCAL_SYMBOL_CHECK (s)) | |
2199 | s = local_symbol_convert ((struct local_symbol *) s); | |
2200 | s->sy_obj = *o; | |
2201 | } | |
2202 | ||
2203 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2204 | ||
2205 | #ifdef TC_SYMFIELD_TYPE | |
2206 | ||
2207 | /* Get a pointer to the processor information for a symbol. */ | |
2208 | ||
2209 | TC_SYMFIELD_TYPE * | |
74937d39 | 2210 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2211 | { |
2212 | if (LOCAL_SYMBOL_CHECK (s)) | |
2213 | s = local_symbol_convert ((struct local_symbol *) s); | |
2214 | return &s->sy_tc; | |
2215 | } | |
2216 | ||
2217 | /* Set the processor information for a symbol. */ | |
2218 | ||
2219 | void | |
74937d39 | 2220 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2221 | { |
2222 | if (LOCAL_SYMBOL_CHECK (s)) | |
2223 | s = local_symbol_convert ((struct local_symbol *) s); | |
2224 | s->sy_tc = *o; | |
2225 | } | |
2226 | ||
2227 | #endif /* TC_SYMFIELD_TYPE */ | |
2228 | ||
252b5132 | 2229 | void |
74937d39 | 2230 | symbol_begin (void) |
252b5132 RH |
2231 | { |
2232 | symbol_lastP = NULL; | |
7c743825 | 2233 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2234 | sy_hash = hash_new (); |
49309057 | 2235 | local_hash = hash_new (); |
252b5132 RH |
2236 | |
2237 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
252b5132 RH |
2238 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) |
2239 | abs_symbol.bsym = bfd_abs_section.symbol; | |
252b5132 RH |
2240 | #endif |
2241 | abs_symbol.sy_value.X_op = O_constant; | |
2242 | abs_symbol.sy_frag = &zero_address_frag; | |
2243 | ||
2244 | if (LOCAL_LABELS_FB) | |
2245 | fb_label_init (); | |
2246 | } | |
252b5132 RH |
2247 | \f |
2248 | int indent_level; | |
2249 | ||
2250 | /* Maximum indent level. | |
2251 | Available for modification inside a gdb session. */ | |
87c245cc | 2252 | static int max_indent_level = 8; |
252b5132 | 2253 | |
252b5132 | 2254 | void |
74937d39 | 2255 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2256 | { |
2257 | const char *name = S_GET_NAME (sym); | |
2258 | if (!name || !name[0]) | |
2259 | name = "(unnamed)"; | |
2260 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2261 | |
2262 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2263 | { | |
2264 | struct local_symbol *locsym = (struct local_symbol *) sym; | |
2265 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2266 | && local_symbol_get_frag (locsym) != NULL) | |
2267 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2268 | if (local_symbol_resolved_p (locsym)) | |
2269 | fprintf (file, " resolved"); | |
2270 | fprintf (file, " local"); | |
2271 | } | |
2272 | else | |
2273 | { | |
2274 | if (sym->sy_frag != &zero_address_frag) | |
2275 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2276 | if (sym->written) | |
2277 | fprintf (file, " written"); | |
2278 | if (sym->sy_resolved) | |
2279 | fprintf (file, " resolved"); | |
2280 | else if (sym->sy_resolving) | |
2281 | fprintf (file, " resolving"); | |
2282 | if (sym->sy_used_in_reloc) | |
2283 | fprintf (file, " used-in-reloc"); | |
2284 | if (sym->sy_used) | |
2285 | fprintf (file, " used"); | |
2286 | if (S_IS_LOCAL (sym)) | |
2287 | fprintf (file, " local"); | |
e97b3f28 | 2288 | if (S_IS_EXTERNAL (sym)) |
49309057 ILT |
2289 | fprintf (file, " extern"); |
2290 | if (S_IS_DEBUG (sym)) | |
2291 | fprintf (file, " debug"); | |
2292 | if (S_IS_DEFINED (sym)) | |
2293 | fprintf (file, " defined"); | |
2294 | } | |
252b5132 | 2295 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2296 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2297 | { |
2298 | segT s = S_GET_SEGMENT (sym); | |
2299 | ||
2300 | if (s != undefined_section | |
411863a4 | 2301 | && s != expr_section) |
252b5132 RH |
2302 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); |
2303 | } | |
2304 | else if (indent_level < max_indent_level | |
2305 | && S_GET_SEGMENT (sym) != undefined_section) | |
2306 | { | |
2307 | indent_level++; | |
2308 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
49309057 ILT |
2309 | if (LOCAL_SYMBOL_CHECK (sym)) |
2310 | fprintf (file, "constant %lx", | |
bd780143 | 2311 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 ILT |
2312 | else |
2313 | print_expr_1 (file, &sym->sy_value); | |
252b5132 RH |
2314 | fprintf (file, ">"); |
2315 | indent_level--; | |
2316 | } | |
2317 | fflush (file); | |
2318 | } | |
2319 | ||
2320 | void | |
74937d39 | 2321 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2322 | { |
2323 | indent_level = 0; | |
2324 | print_symbol_value_1 (stderr, sym); | |
2325 | fprintf (stderr, "\n"); | |
2326 | } | |
2327 | ||
2328 | static void | |
74937d39 | 2329 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2330 | { |
2331 | indent_level++; | |
2332 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2333 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2334 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2335 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2336 | fprintf (file, ">"); | |
2337 | indent_level--; | |
2338 | } | |
2339 | ||
2340 | void | |
74937d39 | 2341 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 RH |
2342 | { |
2343 | fprintf (file, "expr %lx ", (long) exp); | |
2344 | switch (exp->X_op) | |
2345 | { | |
2346 | case O_illegal: | |
2347 | fprintf (file, "illegal"); | |
2348 | break; | |
2349 | case O_absent: | |
2350 | fprintf (file, "absent"); | |
2351 | break; | |
2352 | case O_constant: | |
2353 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2354 | break; | |
2355 | case O_symbol: | |
2356 | indent_level++; | |
2357 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2358 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2359 | fprintf (file, ">"); | |
2360 | maybe_print_addnum: | |
2361 | if (exp->X_add_number) | |
2362 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2363 | (long) exp->X_add_number); | |
2364 | indent_level--; | |
2365 | break; | |
2366 | case O_register: | |
2367 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2368 | break; | |
2369 | case O_big: | |
2370 | fprintf (file, "big"); | |
2371 | break; | |
2372 | case O_uminus: | |
2373 | fprintf (file, "uminus -<"); | |
2374 | indent_level++; | |
2375 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2376 | fprintf (file, ">"); | |
2377 | goto maybe_print_addnum; | |
2378 | case O_bit_not: | |
2379 | fprintf (file, "bit_not"); | |
2380 | break; | |
2381 | case O_multiply: | |
2382 | print_binary (file, "multiply", exp); | |
2383 | break; | |
2384 | case O_divide: | |
2385 | print_binary (file, "divide", exp); | |
2386 | break; | |
2387 | case O_modulus: | |
2388 | print_binary (file, "modulus", exp); | |
2389 | break; | |
2390 | case O_left_shift: | |
2391 | print_binary (file, "lshift", exp); | |
2392 | break; | |
2393 | case O_right_shift: | |
2394 | print_binary (file, "rshift", exp); | |
2395 | break; | |
2396 | case O_bit_inclusive_or: | |
2397 | print_binary (file, "bit_ior", exp); | |
2398 | break; | |
2399 | case O_bit_exclusive_or: | |
2400 | print_binary (file, "bit_xor", exp); | |
2401 | break; | |
2402 | case O_bit_and: | |
2403 | print_binary (file, "bit_and", exp); | |
2404 | break; | |
2405 | case O_eq: | |
2406 | print_binary (file, "eq", exp); | |
2407 | break; | |
2408 | case O_ne: | |
2409 | print_binary (file, "ne", exp); | |
2410 | break; | |
2411 | case O_lt: | |
2412 | print_binary (file, "lt", exp); | |
2413 | break; | |
2414 | case O_le: | |
2415 | print_binary (file, "le", exp); | |
2416 | break; | |
2417 | case O_ge: | |
2418 | print_binary (file, "ge", exp); | |
2419 | break; | |
2420 | case O_gt: | |
2421 | print_binary (file, "gt", exp); | |
2422 | break; | |
2423 | case O_logical_and: | |
2424 | print_binary (file, "logical_and", exp); | |
2425 | break; | |
2426 | case O_logical_or: | |
2427 | print_binary (file, "logical_or", exp); | |
2428 | break; | |
2429 | case O_add: | |
2430 | indent_level++; | |
2431 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2432 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2433 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2434 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2435 | fprintf (file, ">"); | |
2436 | goto maybe_print_addnum; | |
2437 | case O_subtract: | |
2438 | indent_level++; | |
2439 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2440 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2441 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2442 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2443 | fprintf (file, ">"); | |
2444 | goto maybe_print_addnum; | |
2445 | default: | |
2446 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2447 | break; | |
2448 | } | |
2449 | fflush (stdout); | |
2450 | } | |
2451 | ||
2452 | void | |
74937d39 | 2453 | print_expr (expressionS *exp) |
252b5132 RH |
2454 | { |
2455 | print_expr_1 (stderr, exp); | |
2456 | fprintf (stderr, "\n"); | |
2457 | } | |
2458 | ||
2459 | void | |
74937d39 | 2460 | symbol_print_statistics (FILE *file) |
252b5132 RH |
2461 | { |
2462 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2463 | hash_print_statistics (file, "mini local symbol table", local_hash); |
2464 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2465 | local_symbol_count, local_symbol_conversion_count); | |
252b5132 | 2466 | } |