Commit | Line | Data |
---|---|---|
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 | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
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 | #ifdef BFD_ASSEMBLER |
92 | { | |
93 | extern int symbol_table_frozen; | |
94 | if (symbol_table_frozen) | |
95 | abort (); | |
96 | } | |
97 | #endif | |
98 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
99 | ||
100 | return symbolP; | |
101 | } | |
102 | ||
49309057 ILT |
103 | /* Save a symbol name on a permanent obstack, and convert it according |
104 | to the object file format. */ | |
105 | ||
106 | static char * | |
74937d39 | 107 | save_symbol_name (const char *name) |
252b5132 RH |
108 | { |
109 | unsigned int name_length; | |
49309057 | 110 | char *ret; |
252b5132 | 111 | |
7c743825 | 112 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 113 | obstack_grow (¬es, name, name_length); |
49309057 ILT |
114 | ret = obstack_finish (¬es); |
115 | ||
252b5132 | 116 | #ifdef tc_canonicalize_symbol_name |
49309057 | 117 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
118 | #endif |
119 | ||
120 | if (! symbols_case_sensitive) | |
121 | { | |
3882b010 | 122 | char *s; |
252b5132 | 123 | |
3882b010 L |
124 | for (s = ret; *s != '\0'; s++) |
125 | *s = TOUPPER (*s); | |
252b5132 RH |
126 | } |
127 | ||
49309057 ILT |
128 | return ret; |
129 | } | |
130 | ||
131 | symbolS * | |
74937d39 KH |
132 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
133 | segT segment, /* Segment identifier (SEG_<something>). */ | |
134 | valueT valu, /* Symbol value. */ | |
135 | fragS *frag /* Associated fragment. */) | |
49309057 ILT |
136 | { |
137 | char *preserved_copy_of_name; | |
138 | symbolS *symbolP; | |
139 | ||
140 | preserved_copy_of_name = save_symbol_name (name); | |
141 | ||
252b5132 RH |
142 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
143 | ||
7c743825 | 144 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
145 | memset (symbolP, 0, sizeof (symbolS)); |
146 | ||
147 | #ifdef BFD_ASSEMBLER | |
148 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); | |
149 | if (symbolP->bsym == NULL) | |
150 | as_perror ("%s", "bfd_make_empty_symbol"); | |
151 | symbolP->bsym->udata.p = (PTR) symbolP; | |
152 | #endif | |
153 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
154 | ||
155 | S_SET_SEGMENT (symbolP, segment); | |
156 | S_SET_VALUE (symbolP, valu); | |
157 | symbol_clear_list_pointers (symbolP); | |
158 | ||
159 | symbolP->sy_frag = frag; | |
160 | #ifndef BFD_ASSEMBLER | |
161 | symbolP->sy_number = ~0; | |
162 | symbolP->sy_name_offset = (unsigned int) ~0; | |
163 | #endif | |
164 | ||
165 | obj_symbol_new_hook (symbolP); | |
166 | ||
167 | #ifdef tc_symbol_new_hook | |
168 | tc_symbol_new_hook (symbolP); | |
169 | #endif | |
170 | ||
171 | return symbolP; | |
172 | } | |
173 | \f | |
49309057 ILT |
174 | #ifdef BFD_ASSEMBLER |
175 | ||
176 | /* Local symbol support. If we can get away with it, we keep only a | |
177 | small amount of information for local symbols. */ | |
178 | ||
74937d39 | 179 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
180 | |
181 | /* Used for statistics. */ | |
182 | ||
183 | static unsigned long local_symbol_count; | |
184 | static unsigned long local_symbol_conversion_count; | |
185 | ||
186 | /* This macro is called with a symbol argument passed by reference. | |
187 | It returns whether this is a local symbol. If necessary, it | |
188 | changes its argument to the real symbol. */ | |
189 | ||
190 | #define LOCAL_SYMBOL_CHECK(s) \ | |
191 | (s->bsym == NULL \ | |
192 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
193 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
194 | 0) \ | |
195 | : 1) \ | |
196 | : 0) | |
197 | ||
198 | /* Create a local symbol and insert it into the local hash table. */ | |
199 | ||
87c245cc | 200 | static struct local_symbol * |
74937d39 | 201 | local_symbol_make (const char *name, segT section, valueT value, fragS *frag) |
49309057 ILT |
202 | { |
203 | char *name_copy; | |
204 | struct local_symbol *ret; | |
205 | ||
206 | ++local_symbol_count; | |
207 | ||
208 | name_copy = save_symbol_name (name); | |
209 | ||
210 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
211 | ret->lsy_marker = NULL; | |
212 | ret->lsy_name = name_copy; | |
213 | ret->lsy_section = section; | |
214 | local_symbol_set_frag (ret, frag); | |
bd780143 | 215 | ret->lsy_value = value; |
49309057 ILT |
216 | |
217 | hash_jam (local_hash, name_copy, (PTR) ret); | |
218 | ||
219 | return ret; | |
220 | } | |
221 | ||
222 | /* Convert a local symbol into a real symbol. Note that we do not | |
223 | reclaim the space used by the local symbol. */ | |
224 | ||
225 | static symbolS * | |
74937d39 | 226 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
227 | { |
228 | symbolS *ret; | |
229 | ||
230 | assert (locsym->lsy_marker == NULL); | |
231 | if (local_symbol_converted_p (locsym)) | |
232 | return local_symbol_get_real_symbol (locsym); | |
233 | ||
234 | ++local_symbol_conversion_count; | |
235 | ||
bd780143 | 236 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
237 | local_symbol_get_frag (locsym)); |
238 | ||
239 | if (local_symbol_resolved_p (locsym)) | |
240 | ret->sy_resolved = 1; | |
241 | ||
242 | /* Local symbols are always either defined or used. */ | |
243 | ret->sy_used = 1; | |
244 | ||
8c5e1ccd AO |
245 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
246 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
247 | #endif | |
248 | ||
49309057 ILT |
249 | symbol_table_insert (ret); |
250 | ||
251 | local_symbol_mark_converted (locsym); | |
252 | local_symbol_set_real_symbol (locsym, ret); | |
253 | ||
254 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
255 | ||
256 | return ret; | |
257 | } | |
258 | ||
259 | #else /* ! BFD_ASSEMBLER */ | |
260 | ||
261 | #define LOCAL_SYMBOL_CHECK(s) 0 | |
262 | #define local_symbol_convert(s) ((symbolS *) s) | |
263 | ||
264 | #endif /* ! BFD_ASSEMBLER */ | |
265 | \f | |
7c743825 KH |
266 | /* We have just seen "<name>:". |
267 | Creates a struct symbol unless it already exists. | |
268 | ||
269 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 270 | |
252b5132 | 271 | symbolS * |
74937d39 KH |
272 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
273 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
274 | /* We copy this string: OK to alter later. */) | |
252b5132 | 275 | { |
7c743825 | 276 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 277 | |
7cf10893 | 278 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 RH |
279 | defined. */ |
280 | if (LOCAL_LABELS_DOLLAR) | |
281 | { | |
282 | int local; | |
283 | ||
284 | #ifdef BFD_ASSEMBLER | |
285 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
286 | #else | |
287 | local = LOCAL_LABEL (sym_name); | |
288 | #endif | |
289 | ||
290 | if (! local) | |
291 | dollar_label_clear (); | |
292 | } | |
293 | ||
294 | #ifndef WORKING_DOT_WORD | |
295 | if (new_broken_words) | |
296 | { | |
297 | struct broken_word *a; | |
298 | int possible_bytes; | |
299 | fragS *frag_tmp; | |
300 | char *frag_opcode; | |
301 | ||
7cf10893 NC |
302 | if (now_seg == absolute_section) |
303 | { | |
304 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
305 | return NULL; | |
306 | } | |
1d3b2b27 | 307 | |
252b5132 RH |
308 | possible_bytes = (md_short_jump_size |
309 | + new_broken_words * md_long_jump_size); | |
310 | ||
311 | frag_tmp = frag_now; | |
312 | frag_opcode = frag_var (rs_broken_word, | |
313 | possible_bytes, | |
314 | possible_bytes, | |
315 | (relax_substateT) 0, | |
316 | (symbolS *) broken_words, | |
317 | (offsetT) 0, | |
318 | NULL); | |
319 | ||
7c743825 KH |
320 | /* We want to store the pointer to where to insert the jump |
321 | table in the fr_opcode of the rs_broken_word frag. This | |
322 | requires a little hackery. */ | |
252b5132 RH |
323 | while (frag_tmp |
324 | && (frag_tmp->fr_type != rs_broken_word | |
325 | || frag_tmp->fr_opcode)) | |
326 | frag_tmp = frag_tmp->fr_next; | |
327 | know (frag_tmp); | |
328 | frag_tmp->fr_opcode = frag_opcode; | |
329 | new_broken_words = 0; | |
330 | ||
331 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
332 | a->dispfrag = frag_tmp; | |
333 | } | |
334 | #endif /* WORKING_DOT_WORD */ | |
335 | ||
336 | if ((symbolP = symbol_find (sym_name)) != 0) | |
337 | { | |
338 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
339 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
340 | return symbolP; | |
341 | #endif | |
7c743825 | 342 | /* Now check for undefined symbols. */ |
49309057 ILT |
343 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
344 | { | |
a1605869 | 345 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
346 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
347 | ||
348 | if (locsym->lsy_section != undefined_section | |
349 | && (local_symbol_get_frag (locsym) != frag_now | |
350 | || locsym->lsy_section != now_seg | |
bd780143 | 351 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 352 | { |
0e389e77 | 353 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
354 | return symbolP; |
355 | } | |
356 | ||
357 | locsym->lsy_section = now_seg; | |
358 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 359 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 360 | #endif |
49309057 ILT |
361 | } |
362 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
363 | { |
364 | if (S_GET_VALUE (symbolP) == 0) | |
365 | { | |
366 | symbolP->sy_frag = frag_now; | |
367 | #ifdef OBJ_VMS | |
7c743825 | 368 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
369 | #endif |
370 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
371 | S_SET_SEGMENT (symbolP, now_seg); | |
372 | #ifdef N_UNDF | |
373 | know (N_UNDF == 0); | |
7c743825 | 374 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
375 | |
376 | } | |
377 | else | |
378 | { | |
7c743825 KH |
379 | /* There are still several cases to check: |
380 | ||
381 | A .comm/.lcomm symbol being redefined as initialized | |
382 | data is OK | |
383 | ||
384 | A .comm/.lcomm symbol being redefined with a larger | |
385 | size is also OK | |
386 | ||
387 | This only used to be allowed on VMS gas, but Sun cc | |
388 | on the sparc also depends on it. */ | |
252b5132 RH |
389 | |
390 | if (((!S_IS_DEBUG (symbolP) | |
391 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
392 | && S_IS_EXTERNAL (symbolP)) | |
393 | || S_GET_SEGMENT (symbolP) == bss_section) | |
394 | && (now_seg == data_section | |
395 | || now_seg == S_GET_SEGMENT (symbolP))) | |
396 | { | |
7c743825 | 397 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
398 | if (now_seg != data_section) |
399 | { | |
7c743825 KH |
400 | /* New .comm for prev .comm symbol. |
401 | ||
402 | If the new size is larger we just change its | |
403 | value. If the new size is smaller, we ignore | |
404 | this symbol. */ | |
252b5132 RH |
405 | if (S_GET_VALUE (symbolP) |
406 | < ((unsigned) frag_now_fix ())) | |
407 | { | |
408 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
409 | } | |
410 | } | |
411 | else | |
412 | { | |
413 | /* It is a .comm/.lcomm being converted to initialized | |
414 | data. */ | |
415 | symbolP->sy_frag = frag_now; | |
416 | #ifdef OBJ_VMS | |
7c743825 | 417 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
418 | #endif |
419 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 420 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
421 | } |
422 | } | |
423 | else | |
424 | { | |
4c63da97 AM |
425 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
426 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
427 | static const char *od_buf = ""; | |
252b5132 | 428 | #else |
4c63da97 AM |
429 | char od_buf[100]; |
430 | od_buf[0] = '\0'; | |
431 | #ifdef BFD_ASSEMBLER | |
432 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
433 | #endif | |
d1a6c242 KH |
434 | sprintf (od_buf, "%d.%d.", |
435 | S_GET_OTHER (symbolP), | |
436 | S_GET_DESC (symbolP)); | |
4c63da97 | 437 | #endif |
0e389e77 | 438 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
439 | sym_name, |
440 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 441 | od_buf, |
252b5132 | 442 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 443 | } |
7c743825 | 444 | } /* if the undefined symbol has no value */ |
252b5132 RH |
445 | } |
446 | else | |
447 | { | |
7c743825 | 448 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
449 | if (!(frag_now == symbolP->sy_frag |
450 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
451 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 452 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 453 | } |
252b5132 RH |
454 | |
455 | } | |
49309057 ILT |
456 | #ifdef BFD_ASSEMBLER |
457 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
458 | { | |
459 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
460 | (valueT) frag_now_fix (), | |
461 | frag_now); | |
462 | } | |
463 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
464 | else |
465 | { | |
466 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
467 | frag_now); | |
468 | #ifdef OBJ_VMS | |
469 | S_SET_OTHER (symbolP, const_flag); | |
470 | #endif /* OBJ_VMS */ | |
471 | ||
472 | symbol_table_insert (symbolP); | |
d4887adc | 473 | } |
252b5132 RH |
474 | |
475 | if (mri_common_symbol != NULL) | |
476 | { | |
477 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 478 | section. This requires special handling. */ |
49309057 ILT |
479 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
480 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
481 | symbolP->sy_value.X_op = O_symbol; |
482 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
483 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
484 | symbolP->sy_frag = &zero_address_frag; | |
485 | S_SET_SEGMENT (symbolP, expr_section); | |
486 | symbolP->sy_mri_common = 1; | |
487 | } | |
488 | ||
489 | #ifdef tc_frob_label | |
490 | tc_frob_label (symbolP); | |
491 | #endif | |
492 | #ifdef obj_frob_label | |
493 | obj_frob_label (symbolP); | |
494 | #endif | |
495 | ||
496 | return symbolP; | |
497 | } | |
498 | \f | |
7c743825 | 499 | /* Die if we can't insert the symbol. */ |
252b5132 | 500 | |
7c743825 | 501 | void |
74937d39 | 502 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
503 | { |
504 | register const char *error_string; | |
505 | ||
506 | know (symbolP); | |
507 | know (S_GET_NAME (symbolP)); | |
508 | ||
49309057 ILT |
509 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
510 | { | |
511 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
512 | (PTR) symbolP); | |
513 | if (error_string != NULL) | |
0e389e77 | 514 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
515 | S_GET_NAME (symbolP), error_string); |
516 | return; | |
517 | } | |
518 | ||
252b5132 RH |
519 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
520 | { | |
0e389e77 | 521 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 522 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
523 | } /* on error */ |
524 | } | |
252b5132 | 525 | \f |
7c743825 KH |
526 | /* If a symbol name does not exist, create it as undefined, and insert |
527 | it into the symbol table. Return a pointer to it. */ | |
528 | ||
252b5132 | 529 | symbolS * |
74937d39 | 530 | symbol_find_or_make (const char *name) |
252b5132 RH |
531 | { |
532 | register symbolS *symbolP; | |
533 | ||
534 | symbolP = symbol_find (name); | |
535 | ||
536 | if (symbolP == NULL) | |
537 | { | |
49309057 ILT |
538 | #ifdef BFD_ASSEMBLER |
539 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
540 | { | |
541 | symbolP = md_undefined_symbol ((char *) name); | |
542 | if (symbolP != NULL) | |
543 | return symbolP; | |
544 | ||
545 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
546 | (valueT) 0, | |
547 | &zero_address_frag); | |
548 | return symbolP; | |
549 | } | |
550 | #endif | |
551 | ||
252b5132 RH |
552 | symbolP = symbol_make (name); |
553 | ||
554 | symbol_table_insert (symbolP); | |
555 | } /* if symbol wasn't found */ | |
556 | ||
557 | return (symbolP); | |
7c743825 | 558 | } |
252b5132 RH |
559 | |
560 | symbolS * | |
74937d39 | 561 | symbol_make (const char *name) |
252b5132 RH |
562 | { |
563 | symbolS *symbolP; | |
564 | ||
7c743825 | 565 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
566 | symbolP = md_undefined_symbol ((char *) name); |
567 | ||
568 | if (!symbolP) | |
569 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
570 | ||
571 | return (symbolP); | |
7c743825 | 572 | } |
252b5132 | 573 | |
b7d6ed97 | 574 | symbolS * |
74937d39 | 575 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 576 | { |
756d1d01 | 577 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
578 | } |
579 | ||
580 | symbolS * | |
74937d39 | 581 | symbol_temp_new_now (void) |
b7d6ed97 RH |
582 | { |
583 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
584 | } | |
585 | ||
586 | symbolS * | |
74937d39 | 587 | symbol_temp_make (void) |
b7d6ed97 | 588 | { |
756d1d01 | 589 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
590 | } |
591 | ||
7c743825 KH |
592 | /* Implement symbol table lookup. |
593 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
594 | Out: NULL if the name was not in the symbol table, else the address | |
595 | of a struct symbol associated with that name. */ | |
252b5132 | 596 | |
9758f3fc | 597 | symbolS * |
74937d39 | 598 | symbol_find_exact (const char *name) |
9758f3fc AM |
599 | { |
600 | #ifdef BFD_ASSEMBLER | |
601 | { | |
602 | struct local_symbol *locsym; | |
603 | ||
604 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
605 | if (locsym != NULL) | |
606 | return (symbolS *) locsym; | |
607 | } | |
608 | #endif | |
609 | ||
610 | return ((symbolS *) hash_find (sy_hash, name)); | |
611 | } | |
612 | ||
252b5132 | 613 | symbolS * |
91c4c449 | 614 | symbol_find (const char *name) |
252b5132 | 615 | { |
252b5132 RH |
616 | #ifdef tc_canonicalize_symbol_name |
617 | { | |
618 | char *copy; | |
03987ced | 619 | size_t len = strlen (name) + 1; |
252b5132 | 620 | |
03987ced RH |
621 | copy = (char *) alloca (len); |
622 | memcpy (copy, name, len); | |
252b5132 RH |
623 | name = tc_canonicalize_symbol_name (copy); |
624 | } | |
625 | #endif | |
626 | ||
627 | if (! symbols_case_sensitive) | |
628 | { | |
03987ced RH |
629 | char *copy; |
630 | const char *orig; | |
631 | unsigned char c; | |
632 | ||
633 | orig = name; | |
634 | name = copy = (char *) alloca (strlen (name) + 1); | |
635 | ||
636 | while ((c = *orig++) != '\0') | |
637 | { | |
3882b010 | 638 | *copy++ = TOUPPER (c); |
03987ced RH |
639 | } |
640 | *copy = '\0'; | |
252b5132 RH |
641 | } |
642 | ||
9758f3fc | 643 | return symbol_find_exact (name); |
252b5132 RH |
644 | } |
645 | ||
7c743825 KH |
646 | /* Once upon a time, symbols were kept in a singly linked list. At |
647 | least coff needs to be able to rearrange them from time to time, for | |
648 | which a doubly linked list is much more convenient. Loic did these | |
649 | as macros which seemed dangerous to me so they're now functions. | |
650 | xoxorich. */ | |
651 | ||
652 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 653 | |
7c743825 | 654 | void |
74937d39 KH |
655 | symbol_append (symbolS *addme, symbolS *target, |
656 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 657 | { |
49309057 ILT |
658 | if (LOCAL_SYMBOL_CHECK (addme)) |
659 | abort (); | |
660 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
661 | abort (); | |
662 | ||
252b5132 RH |
663 | if (target == NULL) |
664 | { | |
665 | know (*rootPP == NULL); | |
666 | know (*lastPP == NULL); | |
667 | addme->sy_next = NULL; | |
668 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
669 | addme->sy_previous = NULL; | |
670 | #endif | |
671 | *rootPP = addme; | |
672 | *lastPP = addme; | |
673 | return; | |
7c743825 | 674 | } /* if the list is empty */ |
252b5132 RH |
675 | |
676 | if (target->sy_next != NULL) | |
677 | { | |
678 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
679 | target->sy_next->sy_previous = addme; | |
680 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
681 | } | |
682 | else | |
683 | { | |
684 | know (*lastPP == target); | |
685 | *lastPP = addme; | |
7c743825 | 686 | } /* if we have a next */ |
252b5132 RH |
687 | |
688 | addme->sy_next = target->sy_next; | |
689 | target->sy_next = addme; | |
690 | ||
691 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
692 | addme->sy_previous = target; | |
693 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
694 | ||
695 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
696 | } | |
697 | ||
7c743825 KH |
698 | /* Set the chain pointers of SYMBOL to null. */ |
699 | ||
700 | void | |
74937d39 | 701 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 702 | { |
49309057 ILT |
703 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
704 | abort (); | |
252b5132 RH |
705 | symbolP->sy_next = NULL; |
706 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
707 | symbolP->sy_previous = NULL; | |
708 | #endif | |
709 | } | |
710 | ||
711 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
712 | /* Remove SYMBOLP from the list. */ |
713 | ||
714 | void | |
74937d39 | 715 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 716 | { |
49309057 ILT |
717 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
718 | abort (); | |
719 | ||
252b5132 RH |
720 | if (symbolP == *rootPP) |
721 | { | |
722 | *rootPP = symbolP->sy_next; | |
7c743825 | 723 | } /* if it was the root */ |
252b5132 RH |
724 | |
725 | if (symbolP == *lastPP) | |
726 | { | |
727 | *lastPP = symbolP->sy_previous; | |
7c743825 | 728 | } /* if it was the tail */ |
252b5132 RH |
729 | |
730 | if (symbolP->sy_next != NULL) | |
731 | { | |
732 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 733 | } /* if not last */ |
252b5132 RH |
734 | |
735 | if (symbolP->sy_previous != NULL) | |
736 | { | |
737 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 738 | } /* if not first */ |
252b5132 RH |
739 | |
740 | debug_verify_symchain (*rootPP, *lastPP); | |
741 | } | |
742 | ||
7c743825 KH |
743 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
744 | ||
745 | void | |
74937d39 KH |
746 | symbol_insert (symbolS *addme, symbolS *target, |
747 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 748 | { |
49309057 ILT |
749 | if (LOCAL_SYMBOL_CHECK (addme)) |
750 | abort (); | |
751 | if (LOCAL_SYMBOL_CHECK (target)) | |
752 | abort (); | |
753 | ||
252b5132 RH |
754 | if (target->sy_previous != NULL) |
755 | { | |
756 | target->sy_previous->sy_next = addme; | |
757 | } | |
758 | else | |
759 | { | |
760 | know (*rootPP == target); | |
761 | *rootPP = addme; | |
7c743825 | 762 | } /* if not first */ |
252b5132 RH |
763 | |
764 | addme->sy_previous = target->sy_previous; | |
765 | target->sy_previous = addme; | |
766 | addme->sy_next = target; | |
767 | ||
768 | debug_verify_symchain (*rootPP, *lastPP); | |
769 | } | |
770 | ||
771 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
772 | ||
7c743825 | 773 | void |
74937d39 | 774 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
775 | { |
776 | symbolS *symbolP = rootP; | |
777 | ||
778 | if (symbolP == NULL) | |
779 | return; | |
780 | ||
781 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
782 | { | |
49309057 ILT |
783 | #ifdef BFD_ASSEMBLER |
784 | assert (symbolP->bsym != NULL); | |
785 | #endif | |
252b5132 RH |
786 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
787 | assert (symbolP->sy_next->sy_previous == symbolP); | |
788 | #else | |
789 | /* Walk the list anyways, to make sure pointers are still good. */ | |
790 | ; | |
791 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
792 | } | |
793 | ||
794 | assert (lastP == symbolP); | |
795 | } | |
796 | ||
0909233e | 797 | static void |
74937d39 | 798 | report_op_error (symbolS *symp, symbolS *left, symbolS *right) |
0909233e AM |
799 | { |
800 | char *file; | |
801 | unsigned int line; | |
802 | segT seg_left = S_GET_SEGMENT (left); | |
803 | segT seg_right = right ? S_GET_SEGMENT (right) : 0; | |
1d3b2b27 | 804 | |
0909233e AM |
805 | if (expr_symbol_where (symp, &file, &line)) |
806 | { | |
807 | if (seg_left == undefined_section) | |
808 | as_bad_where (file, line, | |
809 | _("undefined symbol `%s' in operation"), | |
810 | S_GET_NAME (left)); | |
811 | if (seg_right == undefined_section) | |
812 | as_bad_where (file, line, | |
813 | _("undefined symbol `%s' in operation"), | |
814 | S_GET_NAME (right)); | |
815 | if (seg_left != undefined_section | |
816 | && seg_right != undefined_section) | |
817 | { | |
818 | if (right) | |
819 | as_bad_where (file, line, | |
820 | _("invalid sections for operation on `%s' and `%s'"), | |
821 | S_GET_NAME (left), S_GET_NAME (right)); | |
822 | else | |
823 | as_bad_where (file, line, | |
824 | _("invalid section for operation on `%s'"), | |
825 | S_GET_NAME (left)); | |
826 | } | |
1d3b2b27 | 827 | |
0909233e AM |
828 | } |
829 | else | |
830 | { | |
831 | if (seg_left == undefined_section) | |
832 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
833 | S_GET_NAME (left), S_GET_NAME (symp)); | |
834 | if (seg_right == undefined_section) | |
835 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
836 | S_GET_NAME (right), S_GET_NAME (symp)); | |
837 | if (seg_left != undefined_section | |
838 | && seg_right != undefined_section) | |
839 | { | |
840 | if (right) | |
841 | as_bad_where (file, line, | |
842 | _("invalid sections for operation on `%s' and `%s' setting `%s'"), | |
843 | S_GET_NAME (left), S_GET_NAME (right), S_GET_NAME (symp)); | |
844 | else | |
845 | as_bad_where (file, line, | |
846 | _("invalid section for operation on `%s' setting `%s'"), | |
847 | S_GET_NAME (left), S_GET_NAME (symp)); | |
848 | } | |
849 | } | |
850 | } | |
851 | ||
252b5132 RH |
852 | /* Resolve the value of a symbol. This is called during the final |
853 | pass over the symbol table to resolve any symbols with complex | |
854 | values. */ | |
855 | ||
856 | valueT | |
74937d39 | 857 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
858 | { |
859 | int resolved; | |
03e83a45 | 860 | valueT final_val = 0; |
252b5132 RH |
861 | segT final_seg; |
862 | ||
a1605869 | 863 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
864 | if (LOCAL_SYMBOL_CHECK (symp)) |
865 | { | |
866 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
867 | ||
bd780143 | 868 | final_val = locsym->lsy_value; |
49309057 | 869 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 870 | return final_val; |
49309057 | 871 | |
bd780143 | 872 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 873 | |
6386f3a7 | 874 | if (finalize_syms) |
49309057 | 875 | { |
bd780143 | 876 | locsym->lsy_value = final_val; |
49309057 ILT |
877 | local_symbol_mark_resolved (locsym); |
878 | } | |
879 | ||
880 | return final_val; | |
881 | } | |
a1605869 | 882 | #endif |
49309057 | 883 | |
252b5132 RH |
884 | if (symp->sy_resolved) |
885 | { | |
886 | if (symp->sy_value.X_op == O_constant) | |
887 | return (valueT) symp->sy_value.X_add_number; | |
888 | else | |
889 | return 0; | |
890 | } | |
891 | ||
892 | resolved = 0; | |
893 | final_seg = S_GET_SEGMENT (symp); | |
894 | ||
895 | if (symp->sy_resolving) | |
896 | { | |
6386f3a7 | 897 | if (finalize_syms) |
0e389e77 | 898 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 899 | S_GET_NAME (symp)); |
252b5132 RH |
900 | final_val = 0; |
901 | resolved = 1; | |
902 | } | |
903 | else | |
904 | { | |
905 | symbolS *add_symbol, *op_symbol; | |
906 | offsetT left, right; | |
907 | segT seg_left, seg_right; | |
908 | operatorT op; | |
909 | ||
910 | symp->sy_resolving = 1; | |
911 | ||
912 | /* Help out with CSE. */ | |
913 | add_symbol = symp->sy_value.X_add_symbol; | |
914 | op_symbol = symp->sy_value.X_op_symbol; | |
915 | final_val = symp->sy_value.X_add_number; | |
916 | op = symp->sy_value.X_op; | |
917 | ||
918 | switch (op) | |
919 | { | |
920 | default: | |
921 | BAD_CASE (op); | |
922 | break; | |
923 | ||
924 | case O_absent: | |
925 | final_val = 0; | |
926 | /* Fall through. */ | |
927 | ||
928 | case O_constant: | |
bea9907b | 929 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
930 | if (final_seg == expr_section) |
931 | final_seg = absolute_section; | |
932 | resolved = 1; | |
933 | break; | |
934 | ||
935 | case O_symbol: | |
936 | case O_symbol_rva: | |
6386f3a7 | 937 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
938 | seg_left = S_GET_SEGMENT (add_symbol); |
939 | if (finalize_syms) | |
940 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 941 | |
e0890092 | 942 | do_symbol: |
252b5132 RH |
943 | if (symp->sy_mri_common) |
944 | { | |
945 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
946 | relocation routines are going to handle it specially. |
947 | Don't change the value. */ | |
49309057 | 948 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
949 | break; |
950 | } | |
951 | ||
6386f3a7 | 952 | if (finalize_syms && final_val == 0) |
49309057 ILT |
953 | { |
954 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
955 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
956 | add_symbol); | |
957 | copy_symbol_attributes (symp, add_symbol); | |
958 | } | |
252b5132 | 959 | |
e0890092 AM |
960 | /* If we have equated this symbol to an undefined or common |
961 | symbol, keep X_op set to O_symbol, and don't change | |
962 | X_add_number. This permits the routine which writes out | |
963 | relocation to detect this case, and convert the | |
964 | relocation to be against the symbol to which this symbol | |
965 | is equated. */ | |
977cdf5a | 966 | if (! S_IS_DEFINED (add_symbol) |
a77a9021 | 967 | #if defined (OBJ_COFF) && defined (TE_PE) && (defined(BFD_ASSEMBLER) || defined(S_IS_WEAK)) |
977cdf5a NC |
968 | || S_IS_WEAK (add_symbol) |
969 | #endif | |
970 | || S_IS_COMMON (add_symbol)) | |
252b5132 | 971 | { |
6386f3a7 | 972 | if (finalize_syms) |
252b5132 | 973 | { |
252b5132 RH |
974 | symp->sy_value.X_op = O_symbol; |
975 | symp->sy_value.X_add_symbol = add_symbol; | |
976 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
977 | /* Use X_op_symbol as a flag. */ |
978 | symp->sy_value.X_op_symbol = add_symbol; | |
979 | final_seg = seg_left; | |
252b5132 RH |
980 | } |
981 | final_val = 0; | |
49309057 | 982 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 983 | symp->sy_resolving = 0; |
252b5132 RH |
984 | goto exit_dont_set_value; |
985 | } | |
e0890092 AM |
986 | else if (finalize_syms && final_seg == expr_section |
987 | && seg_left != expr_section) | |
988 | { | |
989 | /* If the symbol is an expression symbol, do similarly | |
990 | as for undefined and common syms above. Handles | |
991 | "sym +/- expr" where "expr" cannot be evaluated | |
992 | immediately, and we want relocations to be against | |
993 | "sym", eg. because it is weak. */ | |
994 | symp->sy_value.X_op = O_symbol; | |
995 | symp->sy_value.X_add_symbol = add_symbol; | |
996 | symp->sy_value.X_add_number = final_val; | |
997 | symp->sy_value.X_op_symbol = add_symbol; | |
998 | final_seg = seg_left; | |
999 | final_val += symp->sy_frag->fr_address + left; | |
1000 | resolved = symbol_resolved_p (add_symbol); | |
1001 | symp->sy_resolving = 0; | |
1002 | goto exit_dont_set_value; | |
1003 | } | |
252b5132 RH |
1004 | else |
1005 | { | |
1006 | final_val += symp->sy_frag->fr_address + left; | |
1007 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1008 | final_seg = seg_left; |
252b5132 RH |
1009 | } |
1010 | ||
49309057 | 1011 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1012 | break; |
1013 | ||
1014 | case O_uminus: | |
1015 | case O_bit_not: | |
1016 | case O_logical_not: | |
6386f3a7 | 1017 | left = resolve_symbol_value (add_symbol); |
784b640d | 1018 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1019 | |
0909233e AM |
1020 | /* By reducing these to the relevant dyadic operator, we get |
1021 | !S -> S == 0 permitted on anything, | |
1022 | -S -> 0 - S only permitted on absolute | |
1023 | ~S -> S ^ ~0 only permitted on absolute */ | |
1024 | if (op != O_logical_not && seg_left != absolute_section | |
1025 | && finalize_syms) | |
1026 | report_op_error (symp, add_symbol, NULL); | |
1d3b2b27 | 1027 | |
0909233e AM |
1028 | if (final_seg == expr_section || final_seg == undefined_section) |
1029 | final_seg = absolute_section; | |
1d3b2b27 | 1030 | |
252b5132 RH |
1031 | if (op == O_uminus) |
1032 | left = -left; | |
1033 | else if (op == O_logical_not) | |
1034 | left = !left; | |
1035 | else | |
1036 | left = ~left; | |
1037 | ||
1038 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1039 | |
49309057 | 1040 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1041 | break; |
1042 | ||
1043 | case O_multiply: | |
1044 | case O_divide: | |
1045 | case O_modulus: | |
1046 | case O_left_shift: | |
1047 | case O_right_shift: | |
1048 | case O_bit_inclusive_or: | |
1049 | case O_bit_or_not: | |
1050 | case O_bit_exclusive_or: | |
1051 | case O_bit_and: | |
1052 | case O_add: | |
1053 | case O_subtract: | |
1054 | case O_eq: | |
1055 | case O_ne: | |
1056 | case O_lt: | |
1057 | case O_le: | |
1058 | case O_ge: | |
1059 | case O_gt: | |
1060 | case O_logical_and: | |
1061 | case O_logical_or: | |
6386f3a7 AM |
1062 | left = resolve_symbol_value (add_symbol); |
1063 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1064 | seg_left = S_GET_SEGMENT (add_symbol); |
1065 | seg_right = S_GET_SEGMENT (op_symbol); | |
1066 | ||
1067 | /* Simplify addition or subtraction of a constant by folding the | |
1068 | constant into X_add_number. */ | |
e0890092 | 1069 | if (op == O_add) |
252b5132 RH |
1070 | { |
1071 | if (seg_right == absolute_section) | |
1072 | { | |
e0890092 | 1073 | final_val += right; |
252b5132 RH |
1074 | goto do_symbol; |
1075 | } | |
e0890092 | 1076 | else if (seg_left == absolute_section) |
252b5132 | 1077 | { |
252b5132 RH |
1078 | final_val += left; |
1079 | add_symbol = op_symbol; | |
1080 | left = right; | |
e0890092 AM |
1081 | seg_left = seg_right; |
1082 | goto do_symbol; | |
1083 | } | |
1084 | } | |
1085 | else if (op == O_subtract) | |
1086 | { | |
1087 | if (seg_right == absolute_section) | |
1088 | { | |
1089 | final_val -= right; | |
252b5132 RH |
1090 | goto do_symbol; |
1091 | } | |
1092 | } | |
1093 | ||
e0890092 AM |
1094 | /* Equality and non-equality tests are permitted on anything. |
1095 | Subtraction, and other comparison operators are permitted if | |
1096 | both operands are in the same section. Otherwise, both | |
1097 | operands must be absolute. We already handled the case of | |
1098 | addition or subtraction of a constant above. This will | |
1099 | probably need to be changed for an object file format which | |
1100 | supports arbitrary expressions, such as IEEE-695. | |
1101 | ||
1102 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1103 | otherwise we may get the same message multiple times. */ |
0909233e AM |
1104 | if (finalize_syms |
1105 | && !(seg_left == absolute_section | |
1106 | && seg_right == absolute_section) | |
1107 | && !(op == O_eq || op == O_ne) | |
1108 | && !((op == O_subtract | |
1109 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1110 | && seg_left == seg_right | |
1111 | && (seg_left != undefined_section | |
1112 | || add_symbol == op_symbol))) | |
1113 | report_op_error (symp, add_symbol, op_symbol); | |
1d3b2b27 | 1114 | |
0909233e AM |
1115 | if (final_seg == expr_section || final_seg == undefined_section) |
1116 | final_seg = absolute_section; | |
252b5132 RH |
1117 | |
1118 | /* Check for division by zero. */ | |
1119 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1120 | { | |
1121 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1122 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1123 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1124 | { |
1125 | char *file; | |
1126 | unsigned int line; | |
1127 | ||
1128 | if (expr_symbol_where (symp, &file, &line)) | |
1129 | as_bad_where (file, line, _("division by zero")); | |
1130 | else | |
0e389e77 | 1131 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1132 | S_GET_NAME (symp)); |
1133 | } | |
1134 | ||
1135 | right = 1; | |
1136 | } | |
1137 | ||
1138 | switch (symp->sy_value.X_op) | |
1139 | { | |
1140 | case O_multiply: left *= right; break; | |
1141 | case O_divide: left /= right; break; | |
1142 | case O_modulus: left %= right; break; | |
1143 | case O_left_shift: left <<= right; break; | |
1144 | case O_right_shift: left >>= right; break; | |
1145 | case O_bit_inclusive_or: left |= right; break; | |
1146 | case O_bit_or_not: left |= ~right; break; | |
1147 | case O_bit_exclusive_or: left ^= right; break; | |
1148 | case O_bit_and: left &= right; break; | |
1149 | case O_add: left += right; break; | |
1150 | case O_subtract: left -= right; break; | |
e0890092 AM |
1151 | case O_eq: |
1152 | case O_ne: | |
1153 | left = (left == right && seg_left == seg_right | |
1154 | && (seg_left != undefined_section | |
1155 | || add_symbol == op_symbol) | |
1156 | ? ~ (offsetT) 0 : 0); | |
1157 | if (symp->sy_value.X_op == O_ne) | |
1158 | left = ~left; | |
1159 | break; | |
252b5132 RH |
1160 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1161 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1162 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1163 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1164 | case O_logical_and: left = left && right; break; | |
1165 | case O_logical_or: left = left || right; break; | |
1166 | default: abort (); | |
1167 | } | |
1168 | ||
1169 | final_val += symp->sy_frag->fr_address + left; | |
1170 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1171 | { |
1172 | if (seg_left == undefined_section | |
1173 | || seg_right == undefined_section) | |
1174 | final_seg = undefined_section; | |
1175 | else if (seg_left == absolute_section) | |
1176 | final_seg = seg_right; | |
1177 | else | |
1178 | final_seg = seg_left; | |
1179 | } | |
49309057 ILT |
1180 | resolved = (symbol_resolved_p (add_symbol) |
1181 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1182 | break; |
252b5132 RH |
1183 | |
1184 | case O_register: | |
1185 | case O_big: | |
1186 | case O_illegal: | |
1187 | /* Give an error (below) if not in expr_section. We don't | |
1188 | want to worry about expr_section symbols, because they | |
1189 | are fictional (they are created as part of expression | |
1190 | resolution), and any problems may not actually mean | |
1191 | anything. */ | |
1192 | break; | |
1193 | } | |
1194 | ||
1195 | symp->sy_resolving = 0; | |
1196 | } | |
1197 | ||
6386f3a7 | 1198 | if (finalize_syms) |
05bdb37e | 1199 | S_SET_VALUE (symp, final_val); |
252b5132 | 1200 | |
05bdb37e AM |
1201 | exit_dont_set_value: |
1202 | /* Always set the segment, even if not finalizing the value. | |
1203 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1204 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1205 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1206 | for a stab symbol, so we use this bad hack. */ | |
1207 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1208 | #endif |
05bdb37e | 1209 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1210 | |
252b5132 | 1211 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1212 | if (finalize_syms) |
252b5132 RH |
1213 | { |
1214 | if (resolved) | |
1215 | symp->sy_resolved = 1; | |
1216 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1217 | { | |
0e389e77 | 1218 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1219 | S_GET_NAME (symp)); |
252b5132 RH |
1220 | symp->sy_resolved = 1; |
1221 | } | |
1222 | } | |
1223 | ||
1224 | return final_val; | |
1225 | } | |
1226 | ||
49309057 ILT |
1227 | #ifdef BFD_ASSEMBLER |
1228 | ||
74937d39 | 1229 | static void resolve_local_symbol (const char *, PTR); |
49309057 ILT |
1230 | |
1231 | /* A static function passed to hash_traverse. */ | |
1232 | ||
1233 | static void | |
74937d39 | 1234 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, PTR value) |
49309057 ILT |
1235 | { |
1236 | if (value != NULL) | |
6386f3a7 | 1237 | resolve_symbol_value (value); |
49309057 ILT |
1238 | } |
1239 | ||
1240 | #endif | |
1241 | ||
1242 | /* Resolve all local symbols. */ | |
1243 | ||
1244 | void | |
74937d39 | 1245 | resolve_local_symbol_values (void) |
49309057 ILT |
1246 | { |
1247 | #ifdef BFD_ASSEMBLER | |
1248 | hash_traverse (local_hash, resolve_local_symbol); | |
1249 | #endif | |
1250 | } | |
1251 | ||
252b5132 RH |
1252 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1253 | They are *really* local. That is, they go out of scope whenever we see a | |
1254 | label that isn't local. Also, like fb labels, there can be multiple | |
1255 | instances of a dollar label. Therefor, we name encode each instance with | |
1256 | the instance number, keep a list of defined symbols separate from the real | |
1257 | symbol table, and we treat these buggers as a sparse array. */ | |
1258 | ||
1259 | static long *dollar_labels; | |
1260 | static long *dollar_label_instances; | |
1261 | static char *dollar_label_defines; | |
1262 | static unsigned long dollar_label_count; | |
1263 | static unsigned long dollar_label_max; | |
1264 | ||
7c743825 | 1265 | int |
74937d39 | 1266 | dollar_label_defined (long label) |
252b5132 RH |
1267 | { |
1268 | long *i; | |
1269 | ||
1270 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1271 | ||
1272 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1273 | if (*i == label) | |
1274 | return dollar_label_defines[i - dollar_labels]; | |
1275 | ||
7c743825 | 1276 | /* If we get here, label isn't defined. */ |
252b5132 | 1277 | return 0; |
7c743825 | 1278 | } |
252b5132 RH |
1279 | |
1280 | static long | |
74937d39 | 1281 | dollar_label_instance (long label) |
252b5132 RH |
1282 | { |
1283 | long *i; | |
1284 | ||
1285 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1286 | ||
1287 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1288 | if (*i == label) | |
1289 | return (dollar_label_instances[i - dollar_labels]); | |
1290 | ||
7c743825 KH |
1291 | /* If we get here, we haven't seen the label before. |
1292 | Therefore its instance count is zero. */ | |
252b5132 RH |
1293 | return 0; |
1294 | } | |
1295 | ||
7c743825 | 1296 | void |
74937d39 | 1297 | dollar_label_clear (void) |
252b5132 RH |
1298 | { |
1299 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1300 | } | |
1301 | ||
1302 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1303 | ||
7c743825 | 1304 | void |
74937d39 | 1305 | define_dollar_label (long label) |
252b5132 RH |
1306 | { |
1307 | long *i; | |
1308 | ||
1309 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1310 | if (*i == label) | |
1311 | { | |
1312 | ++dollar_label_instances[i - dollar_labels]; | |
1313 | dollar_label_defines[i - dollar_labels] = 1; | |
1314 | return; | |
1315 | } | |
1316 | ||
7c743825 | 1317 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1318 | |
1319 | if (dollar_labels == NULL) | |
1320 | { | |
1321 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1322 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1323 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1324 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1325 | dollar_label_count = 0; | |
1326 | } | |
1327 | else if (dollar_label_count == dollar_label_max) | |
1328 | { | |
1329 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1330 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1331 | dollar_label_max * sizeof (long)); | |
1332 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1333 | dollar_label_max * sizeof (long)); | |
1334 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1335 | } /* if we needed to grow */ |
252b5132 RH |
1336 | |
1337 | dollar_labels[dollar_label_count] = label; | |
1338 | dollar_label_instances[dollar_label_count] = 1; | |
1339 | dollar_label_defines[dollar_label_count] = 1; | |
1340 | ++dollar_label_count; | |
1341 | } | |
1342 | ||
7c743825 KH |
1343 | /* Caller must copy returned name: we re-use the area for the next name. |
1344 | ||
1345 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1346 | where n is the label number and m is the instance number. "L" makes | |
1347 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1348 | ordinary symbol SHOULD get the same name as a local label | |
1349 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1350 | ||
1351 | fb labels get the same treatment, except that ^B is used in place | |
1352 | of ^A. */ | |
1353 | ||
1354 | char * /* Return local label name. */ | |
74937d39 KH |
1355 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1356 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1357 | { |
1358 | long i; | |
7c743825 | 1359 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1360 | static char symbol_name_build[24]; |
1361 | register char *p; | |
1362 | register char *q; | |
7c743825 | 1363 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1364 | |
1365 | know (n >= 0); | |
1366 | know (augend == 0 || augend == 1); | |
1367 | p = symbol_name_build; | |
f84dd1f0 NC |
1368 | #ifdef LOCAL_LABEL_PREFIX |
1369 | *p++ = LOCAL_LABEL_PREFIX; | |
1370 | #endif | |
252b5132 RH |
1371 | *p++ = 'L'; |
1372 | ||
7c743825 KH |
1373 | /* Next code just does sprintf( {}, "%d", n); */ |
1374 | /* Label number. */ | |
252b5132 RH |
1375 | q = symbol_name_temporary; |
1376 | for (*q++ = 0, i = n; i; ++q) | |
1377 | { | |
1378 | *q = i % 10 + '0'; | |
1379 | i /= 10; | |
1380 | } | |
1381 | while ((*p = *--q) != '\0') | |
1382 | ++p; | |
1383 | ||
aa257fcd | 1384 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1385 | |
7c743825 | 1386 | /* Instance number. */ |
252b5132 RH |
1387 | q = symbol_name_temporary; |
1388 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1389 | { | |
1390 | *q = i % 10 + '0'; | |
1391 | i /= 10; | |
1392 | } | |
1393 | while ((*p++ = *--q) != '\0');; | |
1394 | ||
7c743825 | 1395 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1396 | return symbol_name_build; |
1397 | } | |
1398 | ||
47eebc20 | 1399 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1400 | is any decimal digit. Refer to them with |
1401 | "nb" for previous (backward) n: | |
1402 | or "nf" for next (forward) n:. | |
1403 | ||
1404 | We do a little better and let n be any number, not just a single digit, but | |
1405 | since the other guy's assembler only does ten, we treat the first ten | |
1406 | specially. | |
1407 | ||
1408 | Like someone else's assembler, we have one set of local label counters for | |
1409 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1410 | implies that one can refer to a label in another segment, and indeed some | |
1411 | crufty compilers have done just that. | |
1412 | ||
1413 | Since there could be a LOT of these things, treat them as a sparse | |
1414 | array. */ | |
252b5132 RH |
1415 | |
1416 | #define FB_LABEL_SPECIAL (10) | |
1417 | ||
1418 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1419 | static long *fb_labels; | |
1420 | static long *fb_label_instances; | |
1421 | static long fb_label_count; | |
1422 | static long fb_label_max; | |
1423 | ||
7c743825 | 1424 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1425 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1426 | ||
7c743825 | 1427 | static void |
74937d39 | 1428 | fb_label_init (void) |
252b5132 RH |
1429 | { |
1430 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1431 | } |
252b5132 | 1432 | |
7c743825 KH |
1433 | /* Add one to the instance number of this fb label. */ |
1434 | ||
1435 | void | |
74937d39 | 1436 | fb_label_instance_inc (long label) |
252b5132 RH |
1437 | { |
1438 | long *i; | |
1439 | ||
1440 | if (label < FB_LABEL_SPECIAL) | |
1441 | { | |
1442 | ++fb_low_counter[label]; | |
1443 | return; | |
1444 | } | |
1445 | ||
1446 | if (fb_labels != NULL) | |
1447 | { | |
1448 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1449 | i < fb_labels + fb_label_count; ++i) | |
1450 | { | |
1451 | if (*i == label) | |
1452 | { | |
1453 | ++fb_label_instances[i - fb_labels]; | |
1454 | return; | |
7c743825 KH |
1455 | } /* if we find it */ |
1456 | } /* for each existing label */ | |
252b5132 RH |
1457 | } |
1458 | ||
7c743825 | 1459 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1460 | |
1461 | if (fb_labels == NULL) | |
1462 | { | |
1463 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1464 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1465 | fb_label_max = FB_LABEL_BUMP_BY; | |
1466 | fb_label_count = FB_LABEL_SPECIAL; | |
1467 | ||
1468 | } | |
1469 | else if (fb_label_count == fb_label_max) | |
1470 | { | |
1471 | fb_label_max += FB_LABEL_BUMP_BY; | |
1472 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1473 | fb_label_max * sizeof (long)); | |
1474 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1475 | fb_label_max * sizeof (long)); | |
7c743825 | 1476 | } /* if we needed to grow */ |
252b5132 RH |
1477 | |
1478 | fb_labels[fb_label_count] = label; | |
1479 | fb_label_instances[fb_label_count] = 1; | |
1480 | ++fb_label_count; | |
1481 | } | |
1482 | ||
7c743825 | 1483 | static long |
74937d39 | 1484 | fb_label_instance (long label) |
252b5132 RH |
1485 | { |
1486 | long *i; | |
1487 | ||
1488 | if (label < FB_LABEL_SPECIAL) | |
1489 | { | |
1490 | return (fb_low_counter[label]); | |
1491 | } | |
1492 | ||
1493 | if (fb_labels != NULL) | |
1494 | { | |
1495 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1496 | i < fb_labels + fb_label_count; ++i) | |
1497 | { | |
1498 | if (*i == label) | |
1499 | { | |
1500 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1501 | } /* if we find it */ |
1502 | } /* for each existing label */ | |
252b5132 RH |
1503 | } |
1504 | ||
1505 | /* We didn't find the label, so this must be a reference to the | |
1506 | first instance. */ | |
1507 | return 0; | |
1508 | } | |
1509 | ||
7c743825 KH |
1510 | /* Caller must copy returned name: we re-use the area for the next name. |
1511 | ||
1512 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1513 | where n is the label number and m is the instance number. "L" makes | |
1514 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1515 | ordinary symbol SHOULD get the same name as a local label | |
1516 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1517 | ||
1518 | dollar labels get the same treatment, except that ^A is used in | |
1519 | place of ^B. */ | |
1520 | ||
1521 | char * /* Return local label name. */ | |
74937d39 KH |
1522 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1523 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1524 | { |
1525 | long i; | |
7c743825 | 1526 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1527 | static char symbol_name_build[24]; |
1528 | register char *p; | |
1529 | register char *q; | |
7c743825 | 1530 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1531 | |
1532 | know (n >= 0); | |
a76903bf | 1533 | #ifdef TC_MMIX |
71ba24a1 | 1534 | know ((unsigned long) augend <= 2 /* See mmix_fb_label. */); |
a76903bf | 1535 | #else |
71ba24a1 | 1536 | know ((unsigned long) augend <= 1); |
a76903bf | 1537 | #endif |
252b5132 | 1538 | p = symbol_name_build; |
aa257fcd NC |
1539 | #ifdef LOCAL_LABEL_PREFIX |
1540 | *p++ = LOCAL_LABEL_PREFIX; | |
1541 | #endif | |
252b5132 RH |
1542 | *p++ = 'L'; |
1543 | ||
7c743825 KH |
1544 | /* Next code just does sprintf( {}, "%d", n); */ |
1545 | /* Label number. */ | |
252b5132 RH |
1546 | q = symbol_name_temporary; |
1547 | for (*q++ = 0, i = n; i; ++q) | |
1548 | { | |
1549 | *q = i % 10 + '0'; | |
1550 | i /= 10; | |
1551 | } | |
1552 | while ((*p = *--q) != '\0') | |
1553 | ++p; | |
1554 | ||
aa257fcd | 1555 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1556 | |
7c743825 | 1557 | /* Instance number. */ |
252b5132 RH |
1558 | q = symbol_name_temporary; |
1559 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1560 | { | |
1561 | *q = i % 10 + '0'; | |
1562 | i /= 10; | |
1563 | } | |
1564 | while ((*p++ = *--q) != '\0');; | |
1565 | ||
7c743825 | 1566 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1567 | return (symbol_name_build); |
7c743825 | 1568 | } |
252b5132 | 1569 | |
7c743825 KH |
1570 | /* Decode name that may have been generated by foo_label_name() above. |
1571 | If the name wasn't generated by foo_label_name(), then return it | |
1572 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1573 | |
1574 | char * | |
74937d39 | 1575 | decode_local_label_name (char *s) |
252b5132 RH |
1576 | { |
1577 | char *p; | |
1578 | char *symbol_decode; | |
1579 | int label_number; | |
1580 | int instance_number; | |
1581 | char *type; | |
d95767bf | 1582 | const char *message_format; |
aa257fcd | 1583 | int index = 0; |
43ad3147 | 1584 | |
aa257fcd NC |
1585 | #ifdef LOCAL_LABEL_PREFIX |
1586 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1587 | ++index; | |
1588 | #endif | |
43ad3147 | 1589 | |
aa257fcd | 1590 | if (s[index] != 'L') |
252b5132 RH |
1591 | return s; |
1592 | ||
3882b010 | 1593 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1594 | label_number = (10 * label_number) + *p - '0'; |
1595 | ||
aa257fcd | 1596 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1597 | type = "dollar"; |
aa257fcd | 1598 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1599 | type = "fb"; |
1600 | else | |
1601 | return s; | |
1602 | ||
3882b010 | 1603 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1604 | instance_number = (10 * instance_number) + *p - '0'; |
1605 | ||
d95767bf | 1606 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1607 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1608 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1609 | ||
1610 | return symbol_decode; | |
1611 | } | |
1612 | ||
1613 | /* Get the value of a symbol. */ | |
1614 | ||
1615 | valueT | |
74937d39 | 1616 | S_GET_VALUE (symbolS *s) |
252b5132 | 1617 | { |
a1605869 | 1618 | #ifdef BFD_ASSEMBLER |
49309057 | 1619 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1620 | return resolve_symbol_value (s); |
a1605869 | 1621 | #endif |
49309057 | 1622 | |
ac62c346 | 1623 | if (!s->sy_resolved) |
e46d99eb | 1624 | { |
6386f3a7 AM |
1625 | valueT val = resolve_symbol_value (s); |
1626 | if (!finalize_syms) | |
e46d99eb AM |
1627 | return val; |
1628 | } | |
252b5132 RH |
1629 | if (s->sy_value.X_op != O_constant) |
1630 | { | |
1631 | static symbolS *recur; | |
1632 | ||
1633 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1d3b2b27 AM |
1634 | may call S_GET_VALUE. We use a static symbol to avoid the |
1635 | immediate recursion. */ | |
252b5132 RH |
1636 | if (recur == s) |
1637 | return (valueT) s->sy_value.X_add_number; | |
1638 | recur = s; | |
1639 | if (! s->sy_resolved | |
1640 | || s->sy_value.X_op != O_symbol | |
1641 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1642 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1643 | S_GET_NAME (s)); |
1644 | recur = NULL; | |
1645 | } | |
1646 | return (valueT) s->sy_value.X_add_number; | |
1647 | } | |
1648 | ||
1649 | /* Set the value of a symbol. */ | |
1650 | ||
1651 | void | |
74937d39 | 1652 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1653 | { |
a1605869 | 1654 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1655 | if (LOCAL_SYMBOL_CHECK (s)) |
1656 | { | |
bd780143 | 1657 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1658 | return; |
1659 | } | |
a1605869 | 1660 | #endif |
49309057 | 1661 | |
252b5132 RH |
1662 | s->sy_value.X_op = O_constant; |
1663 | s->sy_value.X_add_number = (offsetT) val; | |
1664 | s->sy_value.X_unsigned = 0; | |
1665 | } | |
1666 | ||
1667 | void | |
74937d39 | 1668 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1669 | { |
49309057 | 1670 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1671 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1672 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1673 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1674 | |
252b5132 RH |
1675 | #ifdef BFD_ASSEMBLER |
1676 | /* In an expression, transfer the settings of these flags. | |
1677 | The user can override later, of course. */ | |
1678 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1679 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1680 | #endif | |
1681 | ||
1682 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1683 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1684 | #endif | |
1685 | } | |
1686 | ||
1687 | #ifdef BFD_ASSEMBLER | |
1688 | ||
1689 | int | |
74937d39 | 1690 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1691 | { |
49309057 ILT |
1692 | flagword flags; |
1693 | ||
1694 | if (LOCAL_SYMBOL_CHECK (s)) | |
1695 | return 0; | |
1696 | ||
1697 | flags = s->bsym->flags; | |
252b5132 RH |
1698 | |
1699 | return (flags & BSF_FUNCTION) != 0; | |
1700 | } | |
1701 | ||
1702 | int | |
74937d39 | 1703 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 1704 | { |
49309057 ILT |
1705 | flagword flags; |
1706 | ||
1707 | if (LOCAL_SYMBOL_CHECK (s)) | |
1708 | return 0; | |
1709 | ||
1710 | flags = s->bsym->flags; | |
252b5132 | 1711 | |
7c743825 | 1712 | /* Sanity check. */ |
252b5132 RH |
1713 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1714 | abort (); | |
1715 | ||
1716 | return (flags & BSF_GLOBAL) != 0; | |
1717 | } | |
1718 | ||
1719 | int | |
74937d39 | 1720 | S_IS_WEAK (symbolS *s) |
252b5132 | 1721 | { |
49309057 ILT |
1722 | if (LOCAL_SYMBOL_CHECK (s)) |
1723 | return 0; | |
252b5132 RH |
1724 | return (s->bsym->flags & BSF_WEAK) != 0; |
1725 | } | |
1726 | ||
1727 | int | |
74937d39 | 1728 | S_IS_COMMON (symbolS *s) |
252b5132 | 1729 | { |
49309057 ILT |
1730 | if (LOCAL_SYMBOL_CHECK (s)) |
1731 | return 0; | |
252b5132 RH |
1732 | return bfd_is_com_section (s->bsym->section); |
1733 | } | |
1734 | ||
1735 | int | |
74937d39 | 1736 | S_IS_DEFINED (symbolS *s) |
252b5132 | 1737 | { |
49309057 ILT |
1738 | if (LOCAL_SYMBOL_CHECK (s)) |
1739 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1740 | return s->bsym->section != undefined_section; |
1741 | } | |
1742 | ||
a161fe53 AM |
1743 | |
1744 | #ifndef EXTERN_FORCE_RELOC | |
1745 | #define EXTERN_FORCE_RELOC IS_ELF | |
1746 | #endif | |
1747 | ||
1748 | /* Return true for symbols that should not be reduced to section | |
1749 | symbols or eliminated from expressions, because they may be | |
1750 | overridden by the linker. */ | |
1751 | int | |
74937d39 | 1752 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
1753 | { |
1754 | if (LOCAL_SYMBOL_CHECK (s)) | |
1755 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
1756 | ||
ae6063d4 AM |
1757 | return ((strict |
1758 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
1759 | || (EXTERN_FORCE_RELOC | |
1760 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
a161fe53 AM |
1761 | || s->bsym->section == undefined_section |
1762 | || bfd_is_com_section (s->bsym->section)); | |
1763 | } | |
1764 | ||
252b5132 | 1765 | int |
74937d39 | 1766 | S_IS_DEBUG (symbolS *s) |
252b5132 | 1767 | { |
49309057 ILT |
1768 | if (LOCAL_SYMBOL_CHECK (s)) |
1769 | return 0; | |
252b5132 RH |
1770 | if (s->bsym->flags & BSF_DEBUGGING) |
1771 | return 1; | |
1772 | return 0; | |
1773 | } | |
1774 | ||
1775 | int | |
74937d39 | 1776 | S_IS_LOCAL (symbolS *s) |
252b5132 | 1777 | { |
49309057 | 1778 | flagword flags; |
252b5132 RH |
1779 | const char *name; |
1780 | ||
49309057 ILT |
1781 | if (LOCAL_SYMBOL_CHECK (s)) |
1782 | return 1; | |
1783 | ||
1784 | flags = s->bsym->flags; | |
1785 | ||
7c743825 | 1786 | /* Sanity check. */ |
252b5132 RH |
1787 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1788 | abort (); | |
1789 | ||
1790 | if (bfd_get_section (s->bsym) == reg_section) | |
1791 | return 1; | |
1792 | ||
1793 | if (flag_strip_local_absolute | |
bb82af9f NC |
1794 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
1795 | the source file even when the object file is stripped. */ | |
1796 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
1797 | && bfd_get_section (s->bsym) == absolute_section) |
1798 | return 1; | |
1799 | ||
1800 | name = S_GET_NAME (s); | |
1801 | return (name != NULL | |
1802 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1803 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1804 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1805 | || (! flag_keep_locals |
1806 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1807 | || (flag_mri | |
1808 | && name[0] == '?' | |
1809 | && name[1] == '?'))))); | |
1810 | } | |
1811 | ||
252b5132 | 1812 | int |
74937d39 | 1813 | S_IS_STABD (symbolS *s) |
252b5132 RH |
1814 | { |
1815 | return S_GET_NAME (s) == 0; | |
1816 | } | |
1817 | ||
9758f3fc | 1818 | const char * |
74937d39 | 1819 | S_GET_NAME (symbolS *s) |
252b5132 | 1820 | { |
49309057 ILT |
1821 | if (LOCAL_SYMBOL_CHECK (s)) |
1822 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1823 | return s->bsym->name; |
1824 | } | |
1825 | ||
1826 | segT | |
74937d39 | 1827 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 1828 | { |
49309057 ILT |
1829 | if (LOCAL_SYMBOL_CHECK (s)) |
1830 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1831 | return s->bsym->section; |
1832 | } | |
1833 | ||
1834 | void | |
74937d39 | 1835 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
1836 | { |
1837 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1838 | faults assigning back to const global symbols such as *ABS*, but it | |
1839 | shouldn't happen anyway. */ | |
1840 | ||
49309057 ILT |
1841 | if (LOCAL_SYMBOL_CHECK (s)) |
1842 | { | |
1843 | if (seg == reg_section) | |
1844 | s = local_symbol_convert ((struct local_symbol *) s); | |
1845 | else | |
1846 | { | |
1847 | ((struct local_symbol *) s)->lsy_section = seg; | |
1848 | return; | |
1849 | } | |
1850 | } | |
1851 | ||
252b5132 RH |
1852 | if (s->bsym->flags & BSF_SECTION_SYM) |
1853 | { | |
1854 | if (s->bsym->section != seg) | |
7c743825 | 1855 | abort (); |
252b5132 RH |
1856 | } |
1857 | else | |
1858 | s->bsym->section = seg; | |
1859 | } | |
1860 | ||
1861 | void | |
74937d39 | 1862 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 1863 | { |
49309057 ILT |
1864 | if (LOCAL_SYMBOL_CHECK (s)) |
1865 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1866 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1867 | { | |
1868 | /* Let .weak override .global. */ | |
1869 | return; | |
1870 | } | |
4d7c34bf NC |
1871 | if (s->bsym->flags & BSF_SECTION_SYM) |
1872 | { | |
1873 | char * file; | |
1874 | unsigned int line; | |
d1a6c242 | 1875 | |
4d7c34bf NC |
1876 | /* Do not reassign section symbols. */ |
1877 | as_where (& file, & line); | |
1878 | as_warn_where (file, line, | |
0e389e77 | 1879 | _("section symbols are already global")); |
4d7c34bf NC |
1880 | return; |
1881 | } | |
252b5132 | 1882 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1883 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
977cdf5a NC |
1884 | |
1885 | #ifdef USE_UNIQUE | |
1886 | if (! an_external_name && S_GET_NAME(s)[0] != '.') | |
1887 | an_external_name = S_GET_NAME (s); | |
1888 | #endif | |
252b5132 RH |
1889 | } |
1890 | ||
1891 | void | |
74937d39 | 1892 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 1893 | { |
49309057 ILT |
1894 | if (LOCAL_SYMBOL_CHECK (s)) |
1895 | return; | |
252b5132 RH |
1896 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1897 | { | |
1898 | /* Let .weak override. */ | |
1899 | return; | |
1900 | } | |
1901 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1902 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1903 | } |
1904 | ||
1905 | void | |
74937d39 | 1906 | S_SET_WEAK (symbolS *s) |
252b5132 | 1907 | { |
49309057 ILT |
1908 | if (LOCAL_SYMBOL_CHECK (s)) |
1909 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1910 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1911 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1912 | } |
1913 | ||
00f7efb6 | 1914 | void |
74937d39 | 1915 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
1916 | { |
1917 | if (LOCAL_SYMBOL_CHECK (s)) | |
1918 | s = local_symbol_convert ((struct local_symbol *) s); | |
1919 | if (bfd_is_com_section (s->bsym->section) | |
1920 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
1921 | return; | |
1922 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
1923 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
1924 | as_bad (_("Accessing function `%s' as thread-local object"), | |
1925 | S_GET_NAME (s)); | |
1926 | else if (! bfd_is_und_section (s->bsym->section) | |
1927 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
1928 | as_bad (_("Accessing `%s' as thread-local object"), | |
1929 | S_GET_NAME (s)); | |
1930 | } | |
1931 | ||
252b5132 | 1932 | void |
977cdf5a | 1933 | S_SET_NAME (symbolS *s, const char *name) |
252b5132 | 1934 | { |
49309057 ILT |
1935 | if (LOCAL_SYMBOL_CHECK (s)) |
1936 | { | |
1937 | ((struct local_symbol *) s)->lsy_name = name; | |
1938 | return; | |
1939 | } | |
252b5132 RH |
1940 | s->bsym->name = name; |
1941 | } | |
1942 | #endif /* BFD_ASSEMBLER */ | |
1943 | ||
49309057 ILT |
1944 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
1945 | ||
1946 | /* Return the previous symbol in a chain. */ | |
1947 | ||
1948 | symbolS * | |
74937d39 | 1949 | symbol_previous (symbolS *s) |
49309057 ILT |
1950 | { |
1951 | if (LOCAL_SYMBOL_CHECK (s)) | |
1952 | abort (); | |
1953 | return s->sy_previous; | |
1954 | } | |
1955 | ||
1956 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
1957 | ||
1958 | /* Return the next symbol in a chain. */ | |
1959 | ||
1960 | symbolS * | |
74937d39 | 1961 | symbol_next (symbolS *s) |
49309057 ILT |
1962 | { |
1963 | if (LOCAL_SYMBOL_CHECK (s)) | |
1964 | abort (); | |
1965 | return s->sy_next; | |
1966 | } | |
1967 | ||
1968 | /* Return a pointer to the value of a symbol as an expression. */ | |
1969 | ||
1970 | expressionS * | |
74937d39 | 1971 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
1972 | { |
1973 | if (LOCAL_SYMBOL_CHECK (s)) | |
1974 | s = local_symbol_convert ((struct local_symbol *) s); | |
1975 | return &s->sy_value; | |
1976 | } | |
1977 | ||
1978 | /* Set the value of a symbol to an expression. */ | |
1979 | ||
1980 | void | |
74937d39 | 1981 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
1982 | { |
1983 | if (LOCAL_SYMBOL_CHECK (s)) | |
1984 | s = local_symbol_convert ((struct local_symbol *) s); | |
1985 | s->sy_value = *exp; | |
1986 | } | |
1987 | ||
be95a9c1 AM |
1988 | /* Return a pointer to the X_add_number component of a symbol. */ |
1989 | ||
514d955d | 1990 | offsetT * |
be95a9c1 AM |
1991 | symbol_X_add_number (symbolS *s) |
1992 | { | |
1993 | #ifdef BFD_ASSEMBLER | |
1994 | if (LOCAL_SYMBOL_CHECK (s)) | |
514d955d | 1995 | return (offsetT *) &((struct local_symbol *) s)->lsy_value; |
be95a9c1 AM |
1996 | #endif |
1997 | ||
514d955d | 1998 | return &s->sy_value.X_add_number; |
be95a9c1 AM |
1999 | } |
2000 | ||
b7d6ed97 RH |
2001 | /* Set the value of SYM to the current position in the current segment. */ |
2002 | ||
2003 | void | |
74937d39 | 2004 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2005 | { |
2006 | S_SET_SEGMENT (sym, now_seg); | |
2007 | S_SET_VALUE (sym, frag_now_fix ()); | |
2008 | symbol_set_frag (sym, frag_now); | |
2009 | } | |
2010 | ||
49309057 ILT |
2011 | /* Set the frag of a symbol. */ |
2012 | ||
2013 | void | |
74937d39 | 2014 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 | 2015 | { |
a1605869 | 2016 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2017 | if (LOCAL_SYMBOL_CHECK (s)) |
2018 | { | |
2019 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2020 | return; | |
2021 | } | |
a1605869 | 2022 | #endif |
49309057 ILT |
2023 | s->sy_frag = f; |
2024 | } | |
2025 | ||
2026 | /* Return the frag of a symbol. */ | |
2027 | ||
2028 | fragS * | |
74937d39 | 2029 | symbol_get_frag (symbolS *s) |
49309057 | 2030 | { |
a1605869 | 2031 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2032 | if (LOCAL_SYMBOL_CHECK (s)) |
2033 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 2034 | #endif |
49309057 ILT |
2035 | return s->sy_frag; |
2036 | } | |
2037 | ||
2038 | /* Mark a symbol as having been used. */ | |
2039 | ||
2040 | void | |
74937d39 | 2041 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2042 | { |
2043 | if (LOCAL_SYMBOL_CHECK (s)) | |
2044 | return; | |
2045 | s->sy_used = 1; | |
2046 | } | |
2047 | ||
2048 | /* Clear the mark of whether a symbol has been used. */ | |
2049 | ||
2050 | void | |
74937d39 | 2051 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2052 | { |
2053 | if (LOCAL_SYMBOL_CHECK (s)) | |
2054 | s = local_symbol_convert ((struct local_symbol *) s); | |
2055 | s->sy_used = 0; | |
2056 | } | |
2057 | ||
2058 | /* Return whether a symbol has been used. */ | |
2059 | ||
2060 | int | |
74937d39 | 2061 | symbol_used_p (symbolS *s) |
49309057 ILT |
2062 | { |
2063 | if (LOCAL_SYMBOL_CHECK (s)) | |
2064 | return 1; | |
2065 | return s->sy_used; | |
2066 | } | |
2067 | ||
2068 | /* Mark a symbol as having been used in a reloc. */ | |
2069 | ||
2070 | void | |
74937d39 | 2071 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2072 | { |
2073 | if (LOCAL_SYMBOL_CHECK (s)) | |
2074 | s = local_symbol_convert ((struct local_symbol *) s); | |
2075 | s->sy_used_in_reloc = 1; | |
2076 | } | |
2077 | ||
2078 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2079 | ||
2080 | void | |
74937d39 | 2081 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2082 | { |
2083 | if (LOCAL_SYMBOL_CHECK (s)) | |
2084 | return; | |
2085 | s->sy_used_in_reloc = 0; | |
2086 | } | |
2087 | ||
2088 | /* Return whether a symbol has been used in a reloc. */ | |
2089 | ||
2090 | int | |
74937d39 | 2091 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2092 | { |
2093 | if (LOCAL_SYMBOL_CHECK (s)) | |
2094 | return 0; | |
2095 | return s->sy_used_in_reloc; | |
2096 | } | |
2097 | ||
2098 | /* Mark a symbol as an MRI common symbol. */ | |
2099 | ||
2100 | void | |
74937d39 | 2101 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2102 | { |
2103 | if (LOCAL_SYMBOL_CHECK (s)) | |
2104 | s = local_symbol_convert ((struct local_symbol *) s); | |
2105 | s->sy_mri_common = 1; | |
2106 | } | |
2107 | ||
2108 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2109 | ||
2110 | void | |
74937d39 | 2111 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2112 | { |
2113 | if (LOCAL_SYMBOL_CHECK (s)) | |
2114 | return; | |
2115 | s->sy_mri_common = 0; | |
2116 | } | |
2117 | ||
2118 | /* Return whether a symbol is an MRI common symbol. */ | |
2119 | ||
2120 | int | |
74937d39 | 2121 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2122 | { |
2123 | if (LOCAL_SYMBOL_CHECK (s)) | |
2124 | return 0; | |
2125 | return s->sy_mri_common; | |
2126 | } | |
2127 | ||
2128 | /* Mark a symbol as having been written. */ | |
2129 | ||
2130 | void | |
74937d39 | 2131 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2132 | { |
2133 | if (LOCAL_SYMBOL_CHECK (s)) | |
2134 | return; | |
2135 | s->written = 1; | |
2136 | } | |
2137 | ||
2138 | /* Clear the mark of whether a symbol has been written. */ | |
2139 | ||
2140 | void | |
74937d39 | 2141 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2142 | { |
2143 | if (LOCAL_SYMBOL_CHECK (s)) | |
2144 | return; | |
2145 | s->written = 0; | |
2146 | } | |
2147 | ||
2148 | /* Return whether a symbol has been written. */ | |
2149 | ||
2150 | int | |
74937d39 | 2151 | symbol_written_p (symbolS *s) |
49309057 ILT |
2152 | { |
2153 | if (LOCAL_SYMBOL_CHECK (s)) | |
2154 | return 0; | |
2155 | return s->written; | |
2156 | } | |
2157 | ||
2158 | /* Mark a symbol has having been resolved. */ | |
2159 | ||
2160 | void | |
74937d39 | 2161 | symbol_mark_resolved (symbolS *s) |
49309057 | 2162 | { |
a1605869 | 2163 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2164 | if (LOCAL_SYMBOL_CHECK (s)) |
2165 | { | |
2166 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2167 | return; | |
2168 | } | |
a1605869 | 2169 | #endif |
49309057 ILT |
2170 | s->sy_resolved = 1; |
2171 | } | |
2172 | ||
2173 | /* Return whether a symbol has been resolved. */ | |
2174 | ||
2175 | int | |
74937d39 | 2176 | symbol_resolved_p (symbolS *s) |
49309057 | 2177 | { |
a1605869 | 2178 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2179 | if (LOCAL_SYMBOL_CHECK (s)) |
2180 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2181 | #endif |
49309057 ILT |
2182 | return s->sy_resolved; |
2183 | } | |
2184 | ||
2185 | /* Return whether a symbol is a section symbol. */ | |
2186 | ||
2187 | int | |
74937d39 | 2188 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2189 | { |
2190 | if (LOCAL_SYMBOL_CHECK (s)) | |
2191 | return 0; | |
2192 | #ifdef BFD_ASSEMBLER | |
2193 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2194 | #else | |
7c743825 | 2195 | /* FIXME. */ |
49309057 ILT |
2196 | return 0; |
2197 | #endif | |
2198 | } | |
2199 | ||
2200 | /* Return whether a symbol is equated to another symbol. */ | |
2201 | ||
2202 | int | |
74937d39 | 2203 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2204 | { |
2205 | if (LOCAL_SYMBOL_CHECK (s)) | |
2206 | return 0; | |
2207 | return s->sy_value.X_op == O_symbol; | |
2208 | } | |
2209 | ||
e0890092 AM |
2210 | /* Return whether a symbol is equated to another symbol, and should be |
2211 | treated specially when writing out relocs. */ | |
2212 | ||
2213 | int | |
74937d39 | 2214 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2215 | { |
2216 | if (LOCAL_SYMBOL_CHECK (s)) | |
2217 | return 0; | |
2218 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2219 | resolve_symbol_value to flag expression syms that have been | |
2220 | equated. */ | |
2221 | return (s->sy_value.X_op == O_symbol | |
a77a9021 | 2222 | #if defined (OBJ_COFF) && defined (TE_PE) && (defined(BFD_ASSEMBLER) || defined(S_IS_WEAK)) |
977cdf5a NC |
2223 | && ! S_IS_WEAK (s) |
2224 | #endif | |
e0890092 AM |
2225 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) |
2226 | || ! S_IS_DEFINED (s) | |
2227 | || S_IS_COMMON (s))); | |
2228 | } | |
2229 | ||
49309057 ILT |
2230 | /* Return whether a symbol has a constant value. */ |
2231 | ||
2232 | int | |
74937d39 | 2233 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2234 | { |
2235 | if (LOCAL_SYMBOL_CHECK (s)) | |
2236 | return 1; | |
2237 | return s->sy_value.X_op == O_constant; | |
2238 | } | |
2239 | ||
2240 | #ifdef BFD_ASSEMBLER | |
2241 | ||
2242 | /* Return the BFD symbol for a symbol. */ | |
2243 | ||
2244 | asymbol * | |
74937d39 | 2245 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2246 | { |
2247 | if (LOCAL_SYMBOL_CHECK (s)) | |
2248 | s = local_symbol_convert ((struct local_symbol *) s); | |
2249 | return s->bsym; | |
2250 | } | |
2251 | ||
2252 | /* Set the BFD symbol for a symbol. */ | |
2253 | ||
2254 | void | |
74937d39 | 2255 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2256 | { |
2257 | if (LOCAL_SYMBOL_CHECK (s)) | |
2258 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2259 | /* Usually, it is harmless to reset a symbol to a BFD section |
2260 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2261 | of an old symbol with the newly created section symbol. But when | |
2262 | we have multiple sections with the same name, the newly created | |
2263 | section may have the same name as an old section. We check if the | |
2264 | old symbol has been already marked as a section symbol before | |
2265 | resetting it. */ | |
2266 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2267 | s->bsym = bsym; | |
2268 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2269 | } |
2270 | ||
2271 | #endif /* BFD_ASSEMBLER */ | |
2272 | ||
2273 | #ifdef OBJ_SYMFIELD_TYPE | |
2274 | ||
2275 | /* Get a pointer to the object format information for a symbol. */ | |
2276 | ||
2277 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2278 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2279 | { |
2280 | if (LOCAL_SYMBOL_CHECK (s)) | |
2281 | s = local_symbol_convert ((struct local_symbol *) s); | |
2282 | return &s->sy_obj; | |
2283 | } | |
2284 | ||
2285 | /* Set the object format information for a symbol. */ | |
2286 | ||
2287 | void | |
74937d39 | 2288 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2289 | { |
2290 | if (LOCAL_SYMBOL_CHECK (s)) | |
2291 | s = local_symbol_convert ((struct local_symbol *) s); | |
2292 | s->sy_obj = *o; | |
2293 | } | |
2294 | ||
2295 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2296 | ||
2297 | #ifdef TC_SYMFIELD_TYPE | |
2298 | ||
2299 | /* Get a pointer to the processor information for a symbol. */ | |
2300 | ||
2301 | TC_SYMFIELD_TYPE * | |
74937d39 | 2302 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2303 | { |
2304 | if (LOCAL_SYMBOL_CHECK (s)) | |
2305 | s = local_symbol_convert ((struct local_symbol *) s); | |
2306 | return &s->sy_tc; | |
2307 | } | |
2308 | ||
2309 | /* Set the processor information for a symbol. */ | |
2310 | ||
2311 | void | |
74937d39 | 2312 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2313 | { |
2314 | if (LOCAL_SYMBOL_CHECK (s)) | |
2315 | s = local_symbol_convert ((struct local_symbol *) s); | |
2316 | s->sy_tc = *o; | |
2317 | } | |
2318 | ||
2319 | #endif /* TC_SYMFIELD_TYPE */ | |
2320 | ||
252b5132 | 2321 | void |
74937d39 | 2322 | symbol_begin (void) |
252b5132 RH |
2323 | { |
2324 | symbol_lastP = NULL; | |
7c743825 | 2325 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2326 | sy_hash = hash_new (); |
49309057 ILT |
2327 | #ifdef BFD_ASSEMBLER |
2328 | local_hash = hash_new (); | |
2329 | #endif | |
252b5132 RH |
2330 | |
2331 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2332 | #ifdef BFD_ASSEMBLER | |
2333 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2334 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2335 | #endif | |
2336 | #else | |
7c743825 | 2337 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2338 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2339 | #endif | |
2340 | abs_symbol.sy_value.X_op = O_constant; | |
2341 | abs_symbol.sy_frag = &zero_address_frag; | |
2342 | ||
2343 | if (LOCAL_LABELS_FB) | |
2344 | fb_label_init (); | |
2345 | } | |
252b5132 RH |
2346 | \f |
2347 | int indent_level; | |
2348 | ||
2349 | /* Maximum indent level. | |
2350 | Available for modification inside a gdb session. */ | |
87c245cc | 2351 | static int max_indent_level = 8; |
252b5132 | 2352 | |
252b5132 | 2353 | void |
74937d39 | 2354 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2355 | { |
2356 | const char *name = S_GET_NAME (sym); | |
2357 | if (!name || !name[0]) | |
2358 | name = "(unnamed)"; | |
2359 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2360 | |
2361 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2362 | { | |
a1605869 | 2363 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2364 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2365 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2366 | && local_symbol_get_frag (locsym) != NULL) | |
2367 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2368 | if (local_symbol_resolved_p (locsym)) | |
2369 | fprintf (file, " resolved"); | |
2370 | fprintf (file, " local"); | |
a1605869 | 2371 | #endif |
49309057 ILT |
2372 | } |
2373 | else | |
2374 | { | |
2375 | if (sym->sy_frag != &zero_address_frag) | |
2376 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2377 | if (sym->written) | |
2378 | fprintf (file, " written"); | |
2379 | if (sym->sy_resolved) | |
2380 | fprintf (file, " resolved"); | |
2381 | else if (sym->sy_resolving) | |
2382 | fprintf (file, " resolving"); | |
2383 | if (sym->sy_used_in_reloc) | |
2384 | fprintf (file, " used-in-reloc"); | |
2385 | if (sym->sy_used) | |
2386 | fprintf (file, " used"); | |
2387 | if (S_IS_LOCAL (sym)) | |
2388 | fprintf (file, " local"); | |
e97b3f28 | 2389 | if (S_IS_EXTERNAL (sym)) |
49309057 ILT |
2390 | fprintf (file, " extern"); |
2391 | if (S_IS_DEBUG (sym)) | |
2392 | fprintf (file, " debug"); | |
2393 | if (S_IS_DEFINED (sym)) | |
2394 | fprintf (file, " defined"); | |
2395 | } | |
252b5132 | 2396 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2397 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2398 | { |
2399 | segT s = S_GET_SEGMENT (sym); | |
2400 | ||
2401 | if (s != undefined_section | |
411863a4 | 2402 | && s != expr_section) |
252b5132 RH |
2403 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); |
2404 | } | |
2405 | else if (indent_level < max_indent_level | |
2406 | && S_GET_SEGMENT (sym) != undefined_section) | |
2407 | { | |
2408 | indent_level++; | |
2409 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2410 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2411 | if (LOCAL_SYMBOL_CHECK (sym)) |
2412 | fprintf (file, "constant %lx", | |
bd780143 | 2413 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2414 | else |
a1605869 | 2415 | #endif |
49309057 | 2416 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2417 | fprintf (file, ">"); |
2418 | indent_level--; | |
2419 | } | |
2420 | fflush (file); | |
2421 | } | |
2422 | ||
2423 | void | |
74937d39 | 2424 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2425 | { |
2426 | indent_level = 0; | |
2427 | print_symbol_value_1 (stderr, sym); | |
2428 | fprintf (stderr, "\n"); | |
2429 | } | |
2430 | ||
2431 | static void | |
74937d39 | 2432 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2433 | { |
2434 | indent_level++; | |
2435 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2436 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2437 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2438 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2439 | fprintf (file, ">"); | |
2440 | indent_level--; | |
2441 | } | |
2442 | ||
2443 | void | |
74937d39 | 2444 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 RH |
2445 | { |
2446 | fprintf (file, "expr %lx ", (long) exp); | |
2447 | switch (exp->X_op) | |
2448 | { | |
2449 | case O_illegal: | |
2450 | fprintf (file, "illegal"); | |
2451 | break; | |
2452 | case O_absent: | |
2453 | fprintf (file, "absent"); | |
2454 | break; | |
2455 | case O_constant: | |
2456 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2457 | break; | |
2458 | case O_symbol: | |
2459 | indent_level++; | |
2460 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2461 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2462 | fprintf (file, ">"); | |
2463 | maybe_print_addnum: | |
2464 | if (exp->X_add_number) | |
2465 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2466 | (long) exp->X_add_number); | |
2467 | indent_level--; | |
2468 | break; | |
2469 | case O_register: | |
2470 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2471 | break; | |
2472 | case O_big: | |
2473 | fprintf (file, "big"); | |
2474 | break; | |
2475 | case O_uminus: | |
2476 | fprintf (file, "uminus -<"); | |
2477 | indent_level++; | |
2478 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2479 | fprintf (file, ">"); | |
2480 | goto maybe_print_addnum; | |
2481 | case O_bit_not: | |
2482 | fprintf (file, "bit_not"); | |
2483 | break; | |
2484 | case O_multiply: | |
2485 | print_binary (file, "multiply", exp); | |
2486 | break; | |
2487 | case O_divide: | |
2488 | print_binary (file, "divide", exp); | |
2489 | break; | |
2490 | case O_modulus: | |
2491 | print_binary (file, "modulus", exp); | |
2492 | break; | |
2493 | case O_left_shift: | |
2494 | print_binary (file, "lshift", exp); | |
2495 | break; | |
2496 | case O_right_shift: | |
2497 | print_binary (file, "rshift", exp); | |
2498 | break; | |
2499 | case O_bit_inclusive_or: | |
2500 | print_binary (file, "bit_ior", exp); | |
2501 | break; | |
2502 | case O_bit_exclusive_or: | |
2503 | print_binary (file, "bit_xor", exp); | |
2504 | break; | |
2505 | case O_bit_and: | |
2506 | print_binary (file, "bit_and", exp); | |
2507 | break; | |
2508 | case O_eq: | |
2509 | print_binary (file, "eq", exp); | |
2510 | break; | |
2511 | case O_ne: | |
2512 | print_binary (file, "ne", exp); | |
2513 | break; | |
2514 | case O_lt: | |
2515 | print_binary (file, "lt", exp); | |
2516 | break; | |
2517 | case O_le: | |
2518 | print_binary (file, "le", exp); | |
2519 | break; | |
2520 | case O_ge: | |
2521 | print_binary (file, "ge", exp); | |
2522 | break; | |
2523 | case O_gt: | |
2524 | print_binary (file, "gt", exp); | |
2525 | break; | |
2526 | case O_logical_and: | |
2527 | print_binary (file, "logical_and", exp); | |
2528 | break; | |
2529 | case O_logical_or: | |
2530 | print_binary (file, "logical_or", exp); | |
2531 | break; | |
2532 | case O_add: | |
2533 | indent_level++; | |
2534 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2535 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2536 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2537 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2538 | fprintf (file, ">"); | |
2539 | goto maybe_print_addnum; | |
2540 | case O_subtract: | |
2541 | indent_level++; | |
2542 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2543 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2544 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2545 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2546 | fprintf (file, ">"); | |
2547 | goto maybe_print_addnum; | |
2548 | default: | |
2549 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2550 | break; | |
2551 | } | |
2552 | fflush (stdout); | |
2553 | } | |
2554 | ||
2555 | void | |
74937d39 | 2556 | print_expr (expressionS *exp) |
252b5132 RH |
2557 | { |
2558 | print_expr_1 (stderr, exp); | |
2559 | fprintf (stderr, "\n"); | |
2560 | } | |
2561 | ||
2562 | void | |
74937d39 | 2563 | symbol_print_statistics (FILE *file) |
252b5132 RH |
2564 | { |
2565 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2566 | #ifdef BFD_ASSEMBLER |
2567 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2568 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2569 | local_symbol_count, local_symbol_conversion_count); | |
2570 | #endif | |
252b5132 | 2571 | } |