Commit | Line | Data |
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252b5132 | 1 | /* symbols.c -symbol table- |
f7e42eb4 NC |
2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3 | 1999, 2000, 2001 | |
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 RH |
61 | struct obstack notes; |
62 | ||
8d28c9d7 | 63 | static char *save_symbol_name PARAMS ((const char *)); |
252b5132 RH |
64 | static void fb_label_init PARAMS ((void)); |
65 | static long dollar_label_instance PARAMS ((long)); | |
66 | static long fb_label_instance PARAMS ((long)); | |
67 | ||
68 | static void print_binary PARAMS ((FILE *, const char *, expressionS *)); | |
69 | ||
7c743825 | 70 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
71 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
72 | chain. | |
7c743825 | 73 | |
252b5132 RH |
74 | This function should be called in the general case of creating a |
75 | symbol. However, if the output file symbol table has already been | |
76 | set, and you are certain that this symbol won't be wanted in the | |
77 | output file, you can call symbol_create. */ | |
78 | ||
79 | symbolS * | |
80 | symbol_new (name, segment, valu, frag) | |
81 | const char *name; | |
82 | segT segment; | |
83 | valueT valu; | |
84 | fragS *frag; | |
85 | { | |
86 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
87 | ||
7c743825 | 88 | /* Link to end of symbol chain. */ |
252b5132 RH |
89 | #ifdef BFD_ASSEMBLER |
90 | { | |
91 | extern int symbol_table_frozen; | |
92 | if (symbol_table_frozen) | |
93 | abort (); | |
94 | } | |
95 | #endif | |
96 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
97 | ||
98 | return symbolP; | |
99 | } | |
100 | ||
49309057 ILT |
101 | /* Save a symbol name on a permanent obstack, and convert it according |
102 | to the object file format. */ | |
103 | ||
104 | static char * | |
105 | save_symbol_name (name) | |
106 | const char *name; | |
252b5132 RH |
107 | { |
108 | unsigned int name_length; | |
49309057 | 109 | char *ret; |
252b5132 | 110 | |
7c743825 | 111 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 112 | obstack_grow (¬es, name, name_length); |
49309057 ILT |
113 | ret = obstack_finish (¬es); |
114 | ||
252b5132 | 115 | #ifdef STRIP_UNDERSCORE |
49309057 ILT |
116 | if (ret[0] == '_') |
117 | ++ret; | |
252b5132 RH |
118 | #endif |
119 | ||
120 | #ifdef tc_canonicalize_symbol_name | |
49309057 | 121 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
122 | #endif |
123 | ||
124 | if (! symbols_case_sensitive) | |
125 | { | |
3882b010 | 126 | char *s; |
252b5132 | 127 | |
3882b010 L |
128 | for (s = ret; *s != '\0'; s++) |
129 | *s = TOUPPER (*s); | |
252b5132 RH |
130 | } |
131 | ||
49309057 ILT |
132 | return ret; |
133 | } | |
134 | ||
135 | symbolS * | |
136 | symbol_create (name, segment, valu, frag) | |
7c743825 KH |
137 | const char *name; /* It is copied, the caller can destroy/modify. */ |
138 | segT segment; /* Segment identifier (SEG_<something>). */ | |
139 | valueT valu; /* Symbol value. */ | |
140 | fragS *frag; /* Associated fragment. */ | |
49309057 ILT |
141 | { |
142 | char *preserved_copy_of_name; | |
143 | symbolS *symbolP; | |
144 | ||
145 | preserved_copy_of_name = save_symbol_name (name); | |
146 | ||
252b5132 RH |
147 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
148 | ||
7c743825 | 149 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
150 | memset (symbolP, 0, sizeof (symbolS)); |
151 | ||
152 | #ifdef BFD_ASSEMBLER | |
153 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); | |
154 | if (symbolP->bsym == NULL) | |
155 | as_perror ("%s", "bfd_make_empty_symbol"); | |
156 | symbolP->bsym->udata.p = (PTR) symbolP; | |
157 | #endif | |
158 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
159 | ||
160 | S_SET_SEGMENT (symbolP, segment); | |
161 | S_SET_VALUE (symbolP, valu); | |
162 | symbol_clear_list_pointers (symbolP); | |
163 | ||
164 | symbolP->sy_frag = frag; | |
165 | #ifndef BFD_ASSEMBLER | |
166 | symbolP->sy_number = ~0; | |
167 | symbolP->sy_name_offset = (unsigned int) ~0; | |
168 | #endif | |
169 | ||
170 | obj_symbol_new_hook (symbolP); | |
171 | ||
172 | #ifdef tc_symbol_new_hook | |
173 | tc_symbol_new_hook (symbolP); | |
174 | #endif | |
175 | ||
176 | return symbolP; | |
177 | } | |
178 | \f | |
49309057 ILT |
179 | #ifdef BFD_ASSEMBLER |
180 | ||
181 | /* Local symbol support. If we can get away with it, we keep only a | |
182 | small amount of information for local symbols. */ | |
183 | ||
184 | static struct local_symbol *local_symbol_make PARAMS ((const char *, segT, | |
185 | valueT, fragS *)); | |
186 | static symbolS *local_symbol_convert PARAMS ((struct local_symbol *)); | |
187 | ||
188 | /* Used for statistics. */ | |
189 | ||
190 | static unsigned long local_symbol_count; | |
191 | static unsigned long local_symbol_conversion_count; | |
192 | ||
193 | /* This macro is called with a symbol argument passed by reference. | |
194 | It returns whether this is a local symbol. If necessary, it | |
195 | changes its argument to the real symbol. */ | |
196 | ||
197 | #define LOCAL_SYMBOL_CHECK(s) \ | |
198 | (s->bsym == NULL \ | |
199 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
200 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
201 | 0) \ | |
202 | : 1) \ | |
203 | : 0) | |
204 | ||
205 | /* Create a local symbol and insert it into the local hash table. */ | |
206 | ||
207 | static struct local_symbol * | |
bd780143 | 208 | local_symbol_make (name, section, value, frag) |
49309057 ILT |
209 | const char *name; |
210 | segT section; | |
bd780143 | 211 | valueT value; |
49309057 ILT |
212 | fragS *frag; |
213 | { | |
214 | char *name_copy; | |
215 | struct local_symbol *ret; | |
216 | ||
217 | ++local_symbol_count; | |
218 | ||
219 | name_copy = save_symbol_name (name); | |
220 | ||
221 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
222 | ret->lsy_marker = NULL; | |
223 | ret->lsy_name = name_copy; | |
224 | ret->lsy_section = section; | |
225 | local_symbol_set_frag (ret, frag); | |
bd780143 | 226 | ret->lsy_value = value; |
49309057 ILT |
227 | |
228 | hash_jam (local_hash, name_copy, (PTR) ret); | |
229 | ||
230 | return ret; | |
231 | } | |
232 | ||
233 | /* Convert a local symbol into a real symbol. Note that we do not | |
234 | reclaim the space used by the local symbol. */ | |
235 | ||
236 | static symbolS * | |
237 | local_symbol_convert (locsym) | |
238 | struct local_symbol *locsym; | |
239 | { | |
240 | symbolS *ret; | |
241 | ||
242 | assert (locsym->lsy_marker == NULL); | |
243 | if (local_symbol_converted_p (locsym)) | |
244 | return local_symbol_get_real_symbol (locsym); | |
245 | ||
246 | ++local_symbol_conversion_count; | |
247 | ||
bd780143 | 248 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
249 | local_symbol_get_frag (locsym)); |
250 | ||
251 | if (local_symbol_resolved_p (locsym)) | |
252 | ret->sy_resolved = 1; | |
253 | ||
254 | /* Local symbols are always either defined or used. */ | |
255 | ret->sy_used = 1; | |
256 | ||
8c5e1ccd AO |
257 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
258 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
259 | #endif | |
260 | ||
49309057 ILT |
261 | symbol_table_insert (ret); |
262 | ||
263 | local_symbol_mark_converted (locsym); | |
264 | local_symbol_set_real_symbol (locsym, ret); | |
265 | ||
266 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
267 | ||
268 | return ret; | |
269 | } | |
270 | ||
271 | #else /* ! BFD_ASSEMBLER */ | |
272 | ||
273 | #define LOCAL_SYMBOL_CHECK(s) 0 | |
274 | #define local_symbol_convert(s) ((symbolS *) s) | |
275 | ||
276 | #endif /* ! BFD_ASSEMBLER */ | |
277 | \f | |
7c743825 KH |
278 | /* We have just seen "<name>:". |
279 | Creates a struct symbol unless it already exists. | |
280 | ||
281 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 282 | |
252b5132 | 283 | symbolS * |
7c743825 KH |
284 | colon (sym_name) /* Just seen "x:" - rattle symbols & frags. */ |
285 | const char *sym_name; /* Symbol name, as a cannonical string. */ | |
286 | /* We copy this string: OK to alter later. */ | |
252b5132 | 287 | { |
7c743825 | 288 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 RH |
289 | |
290 | /* Sun local labels go out of scope whenever a non-local symbol is | |
291 | defined. */ | |
292 | if (LOCAL_LABELS_DOLLAR) | |
293 | { | |
294 | int local; | |
295 | ||
296 | #ifdef BFD_ASSEMBLER | |
297 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
298 | #else | |
299 | local = LOCAL_LABEL (sym_name); | |
300 | #endif | |
301 | ||
302 | if (! local) | |
303 | dollar_label_clear (); | |
304 | } | |
305 | ||
306 | #ifndef WORKING_DOT_WORD | |
307 | if (new_broken_words) | |
308 | { | |
309 | struct broken_word *a; | |
310 | int possible_bytes; | |
311 | fragS *frag_tmp; | |
312 | char *frag_opcode; | |
313 | ||
314 | extern const int md_short_jump_size; | |
315 | extern const int md_long_jump_size; | |
316 | possible_bytes = (md_short_jump_size | |
317 | + new_broken_words * md_long_jump_size); | |
318 | ||
319 | frag_tmp = frag_now; | |
320 | frag_opcode = frag_var (rs_broken_word, | |
321 | possible_bytes, | |
322 | possible_bytes, | |
323 | (relax_substateT) 0, | |
324 | (symbolS *) broken_words, | |
325 | (offsetT) 0, | |
326 | NULL); | |
327 | ||
7c743825 KH |
328 | /* We want to store the pointer to where to insert the jump |
329 | table in the fr_opcode of the rs_broken_word frag. This | |
330 | requires a little hackery. */ | |
252b5132 RH |
331 | while (frag_tmp |
332 | && (frag_tmp->fr_type != rs_broken_word | |
333 | || frag_tmp->fr_opcode)) | |
334 | frag_tmp = frag_tmp->fr_next; | |
335 | know (frag_tmp); | |
336 | frag_tmp->fr_opcode = frag_opcode; | |
337 | new_broken_words = 0; | |
338 | ||
339 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
340 | a->dispfrag = frag_tmp; | |
341 | } | |
342 | #endif /* WORKING_DOT_WORD */ | |
343 | ||
344 | if ((symbolP = symbol_find (sym_name)) != 0) | |
345 | { | |
346 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
347 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
348 | return symbolP; | |
349 | #endif | |
7c743825 | 350 | /* Now check for undefined symbols. */ |
49309057 ILT |
351 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
352 | { | |
a1605869 | 353 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
354 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
355 | ||
356 | if (locsym->lsy_section != undefined_section | |
357 | && (local_symbol_get_frag (locsym) != frag_now | |
358 | || locsym->lsy_section != now_seg | |
bd780143 | 359 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 360 | { |
0e389e77 | 361 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
362 | return symbolP; |
363 | } | |
364 | ||
365 | locsym->lsy_section = now_seg; | |
366 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 367 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 368 | #endif |
49309057 ILT |
369 | } |
370 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
371 | { |
372 | if (S_GET_VALUE (symbolP) == 0) | |
373 | { | |
374 | symbolP->sy_frag = frag_now; | |
375 | #ifdef OBJ_VMS | |
7c743825 | 376 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
377 | #endif |
378 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
379 | S_SET_SEGMENT (symbolP, now_seg); | |
380 | #ifdef N_UNDF | |
381 | know (N_UNDF == 0); | |
7c743825 | 382 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
383 | |
384 | } | |
385 | else | |
386 | { | |
7c743825 KH |
387 | /* There are still several cases to check: |
388 | ||
389 | A .comm/.lcomm symbol being redefined as initialized | |
390 | data is OK | |
391 | ||
392 | A .comm/.lcomm symbol being redefined with a larger | |
393 | size is also OK | |
394 | ||
395 | This only used to be allowed on VMS gas, but Sun cc | |
396 | on the sparc also depends on it. */ | |
252b5132 RH |
397 | |
398 | if (((!S_IS_DEBUG (symbolP) | |
399 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
400 | && S_IS_EXTERNAL (symbolP)) | |
401 | || S_GET_SEGMENT (symbolP) == bss_section) | |
402 | && (now_seg == data_section | |
403 | || now_seg == S_GET_SEGMENT (symbolP))) | |
404 | { | |
7c743825 | 405 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
406 | if (now_seg != data_section) |
407 | { | |
7c743825 KH |
408 | /* New .comm for prev .comm symbol. |
409 | ||
410 | If the new size is larger we just change its | |
411 | value. If the new size is smaller, we ignore | |
412 | this symbol. */ | |
252b5132 RH |
413 | if (S_GET_VALUE (symbolP) |
414 | < ((unsigned) frag_now_fix ())) | |
415 | { | |
416 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
417 | } | |
418 | } | |
419 | else | |
420 | { | |
421 | /* It is a .comm/.lcomm being converted to initialized | |
422 | data. */ | |
423 | symbolP->sy_frag = frag_now; | |
424 | #ifdef OBJ_VMS | |
7c743825 | 425 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
426 | #endif |
427 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 428 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
429 | } |
430 | } | |
431 | else | |
432 | { | |
4c63da97 AM |
433 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
434 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
435 | static const char *od_buf = ""; | |
252b5132 | 436 | #else |
4c63da97 AM |
437 | char od_buf[100]; |
438 | od_buf[0] = '\0'; | |
439 | #ifdef BFD_ASSEMBLER | |
440 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
441 | #endif | |
442 | sprintf(od_buf, "%d.%d.", | |
443 | S_GET_OTHER (symbolP), | |
444 | S_GET_DESC (symbolP)); | |
445 | #endif | |
0e389e77 | 446 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
447 | sym_name, |
448 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 449 | od_buf, |
252b5132 | 450 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 451 | } |
7c743825 | 452 | } /* if the undefined symbol has no value */ |
252b5132 RH |
453 | } |
454 | else | |
455 | { | |
7c743825 | 456 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
457 | if (!(frag_now == symbolP->sy_frag |
458 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
459 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 460 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 461 | } |
252b5132 RH |
462 | |
463 | } | |
49309057 ILT |
464 | #ifdef BFD_ASSEMBLER |
465 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
466 | { | |
467 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
468 | (valueT) frag_now_fix (), | |
469 | frag_now); | |
470 | } | |
471 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
472 | else |
473 | { | |
474 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
475 | frag_now); | |
476 | #ifdef OBJ_VMS | |
477 | S_SET_OTHER (symbolP, const_flag); | |
478 | #endif /* OBJ_VMS */ | |
479 | ||
480 | symbol_table_insert (symbolP); | |
d4887adc | 481 | } |
252b5132 RH |
482 | |
483 | if (mri_common_symbol != NULL) | |
484 | { | |
485 | /* This symbol is actually being defined within an MRI common | |
486 | section. This requires special handling. */ | |
49309057 ILT |
487 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
488 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
489 | symbolP->sy_value.X_op = O_symbol; |
490 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
491 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
492 | symbolP->sy_frag = &zero_address_frag; | |
493 | S_SET_SEGMENT (symbolP, expr_section); | |
494 | symbolP->sy_mri_common = 1; | |
495 | } | |
496 | ||
497 | #ifdef tc_frob_label | |
498 | tc_frob_label (symbolP); | |
499 | #endif | |
500 | #ifdef obj_frob_label | |
501 | obj_frob_label (symbolP); | |
502 | #endif | |
503 | ||
504 | return symbolP; | |
505 | } | |
506 | \f | |
7c743825 | 507 | /* Die if we can't insert the symbol. */ |
252b5132 | 508 | |
7c743825 | 509 | void |
252b5132 RH |
510 | symbol_table_insert (symbolP) |
511 | symbolS *symbolP; | |
512 | { | |
513 | register const char *error_string; | |
514 | ||
515 | know (symbolP); | |
516 | know (S_GET_NAME (symbolP)); | |
517 | ||
49309057 ILT |
518 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
519 | { | |
520 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
521 | (PTR) symbolP); | |
522 | if (error_string != NULL) | |
0e389e77 | 523 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
524 | S_GET_NAME (symbolP), error_string); |
525 | return; | |
526 | } | |
527 | ||
252b5132 RH |
528 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
529 | { | |
0e389e77 | 530 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 531 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
532 | } /* on error */ |
533 | } | |
252b5132 | 534 | \f |
7c743825 KH |
535 | /* If a symbol name does not exist, create it as undefined, and insert |
536 | it into the symbol table. Return a pointer to it. */ | |
537 | ||
252b5132 RH |
538 | symbolS * |
539 | symbol_find_or_make (name) | |
540 | const char *name; | |
541 | { | |
542 | register symbolS *symbolP; | |
543 | ||
544 | symbolP = symbol_find (name); | |
545 | ||
546 | if (symbolP == NULL) | |
547 | { | |
49309057 ILT |
548 | #ifdef BFD_ASSEMBLER |
549 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
550 | { | |
551 | symbolP = md_undefined_symbol ((char *) name); | |
552 | if (symbolP != NULL) | |
553 | return symbolP; | |
554 | ||
555 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
556 | (valueT) 0, | |
557 | &zero_address_frag); | |
558 | return symbolP; | |
559 | } | |
560 | #endif | |
561 | ||
252b5132 RH |
562 | symbolP = symbol_make (name); |
563 | ||
564 | symbol_table_insert (symbolP); | |
565 | } /* if symbol wasn't found */ | |
566 | ||
567 | return (symbolP); | |
7c743825 | 568 | } |
252b5132 RH |
569 | |
570 | symbolS * | |
571 | symbol_make (name) | |
572 | CONST char *name; | |
573 | { | |
574 | symbolS *symbolP; | |
575 | ||
7c743825 | 576 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
577 | symbolP = md_undefined_symbol ((char *) name); |
578 | ||
579 | if (!symbolP) | |
580 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
581 | ||
582 | return (symbolP); | |
7c743825 | 583 | } |
252b5132 | 584 | |
7c743825 KH |
585 | /* Implement symbol table lookup. |
586 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
587 | Out: NULL if the name was not in the symbol table, else the address | |
588 | of a struct symbol associated with that name. */ | |
252b5132 RH |
589 | |
590 | symbolS * | |
591 | symbol_find (name) | |
592 | CONST char *name; | |
593 | { | |
594 | #ifdef STRIP_UNDERSCORE | |
595 | return (symbol_find_base (name, 1)); | |
596 | #else /* STRIP_UNDERSCORE */ | |
597 | return (symbol_find_base (name, 0)); | |
598 | #endif /* STRIP_UNDERSCORE */ | |
7c743825 | 599 | } |
252b5132 RH |
600 | |
601 | symbolS * | |
602 | symbol_find_base (name, strip_underscore) | |
603 | CONST char *name; | |
604 | int strip_underscore; | |
605 | { | |
606 | if (strip_underscore && *name == '_') | |
607 | name++; | |
608 | ||
609 | #ifdef tc_canonicalize_symbol_name | |
610 | { | |
611 | char *copy; | |
03987ced | 612 | size_t len = strlen (name) + 1; |
252b5132 | 613 | |
03987ced RH |
614 | copy = (char *) alloca (len); |
615 | memcpy (copy, name, len); | |
252b5132 RH |
616 | name = tc_canonicalize_symbol_name (copy); |
617 | } | |
618 | #endif | |
619 | ||
620 | if (! symbols_case_sensitive) | |
621 | { | |
03987ced RH |
622 | char *copy; |
623 | const char *orig; | |
624 | unsigned char c; | |
625 | ||
626 | orig = name; | |
627 | name = copy = (char *) alloca (strlen (name) + 1); | |
628 | ||
629 | while ((c = *orig++) != '\0') | |
630 | { | |
3882b010 | 631 | *copy++ = TOUPPER (c); |
03987ced RH |
632 | } |
633 | *copy = '\0'; | |
252b5132 RH |
634 | } |
635 | ||
a1605869 ILT |
636 | #ifdef BFD_ASSEMBLER |
637 | { | |
638 | struct local_symbol *locsym; | |
639 | ||
640 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
641 | if (locsym != NULL) | |
642 | return (symbolS *) locsym; | |
643 | } | |
644 | #endif | |
49309057 | 645 | |
252b5132 RH |
646 | return ((symbolS *) hash_find (sy_hash, name)); |
647 | } | |
648 | ||
7c743825 KH |
649 | /* Once upon a time, symbols were kept in a singly linked list. At |
650 | least coff needs to be able to rearrange them from time to time, for | |
651 | which a doubly linked list is much more convenient. Loic did these | |
652 | as macros which seemed dangerous to me so they're now functions. | |
653 | xoxorich. */ | |
654 | ||
655 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 656 | |
7c743825 | 657 | void |
252b5132 RH |
658 | symbol_append (addme, target, rootPP, lastPP) |
659 | symbolS *addme; | |
660 | symbolS *target; | |
661 | symbolS **rootPP; | |
662 | symbolS **lastPP; | |
663 | { | |
49309057 ILT |
664 | if (LOCAL_SYMBOL_CHECK (addme)) |
665 | abort (); | |
666 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
667 | abort (); | |
668 | ||
252b5132 RH |
669 | if (target == NULL) |
670 | { | |
671 | know (*rootPP == NULL); | |
672 | know (*lastPP == NULL); | |
673 | addme->sy_next = NULL; | |
674 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
675 | addme->sy_previous = NULL; | |
676 | #endif | |
677 | *rootPP = addme; | |
678 | *lastPP = addme; | |
679 | return; | |
7c743825 | 680 | } /* if the list is empty */ |
252b5132 RH |
681 | |
682 | if (target->sy_next != NULL) | |
683 | { | |
684 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
685 | target->sy_next->sy_previous = addme; | |
686 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
687 | } | |
688 | else | |
689 | { | |
690 | know (*lastPP == target); | |
691 | *lastPP = addme; | |
7c743825 | 692 | } /* if we have a next */ |
252b5132 RH |
693 | |
694 | addme->sy_next = target->sy_next; | |
695 | target->sy_next = addme; | |
696 | ||
697 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
698 | addme->sy_previous = target; | |
699 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
700 | ||
701 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
702 | } | |
703 | ||
7c743825 KH |
704 | /* Set the chain pointers of SYMBOL to null. */ |
705 | ||
706 | void | |
252b5132 RH |
707 | symbol_clear_list_pointers (symbolP) |
708 | symbolS *symbolP; | |
709 | { | |
49309057 ILT |
710 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
711 | abort (); | |
252b5132 RH |
712 | symbolP->sy_next = NULL; |
713 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
714 | symbolP->sy_previous = NULL; | |
715 | #endif | |
716 | } | |
717 | ||
718 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
719 | /* Remove SYMBOLP from the list. */ |
720 | ||
721 | void | |
252b5132 RH |
722 | symbol_remove (symbolP, rootPP, lastPP) |
723 | symbolS *symbolP; | |
724 | symbolS **rootPP; | |
725 | symbolS **lastPP; | |
726 | { | |
49309057 ILT |
727 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
728 | abort (); | |
729 | ||
252b5132 RH |
730 | if (symbolP == *rootPP) |
731 | { | |
732 | *rootPP = symbolP->sy_next; | |
7c743825 | 733 | } /* if it was the root */ |
252b5132 RH |
734 | |
735 | if (symbolP == *lastPP) | |
736 | { | |
737 | *lastPP = symbolP->sy_previous; | |
7c743825 | 738 | } /* if it was the tail */ |
252b5132 RH |
739 | |
740 | if (symbolP->sy_next != NULL) | |
741 | { | |
742 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 743 | } /* if not last */ |
252b5132 RH |
744 | |
745 | if (symbolP->sy_previous != NULL) | |
746 | { | |
747 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 748 | } /* if not first */ |
252b5132 RH |
749 | |
750 | debug_verify_symchain (*rootPP, *lastPP); | |
751 | } | |
752 | ||
7c743825 KH |
753 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
754 | ||
755 | void | |
252b5132 RH |
756 | symbol_insert (addme, target, rootPP, lastPP) |
757 | symbolS *addme; | |
758 | symbolS *target; | |
759 | symbolS **rootPP; | |
ab9da554 | 760 | symbolS **lastPP ATTRIBUTE_UNUSED; |
252b5132 | 761 | { |
49309057 ILT |
762 | if (LOCAL_SYMBOL_CHECK (addme)) |
763 | abort (); | |
764 | if (LOCAL_SYMBOL_CHECK (target)) | |
765 | abort (); | |
766 | ||
252b5132 RH |
767 | if (target->sy_previous != NULL) |
768 | { | |
769 | target->sy_previous->sy_next = addme; | |
770 | } | |
771 | else | |
772 | { | |
773 | know (*rootPP == target); | |
774 | *rootPP = addme; | |
7c743825 | 775 | } /* if not first */ |
252b5132 RH |
776 | |
777 | addme->sy_previous = target->sy_previous; | |
778 | target->sy_previous = addme; | |
779 | addme->sy_next = target; | |
780 | ||
781 | debug_verify_symchain (*rootPP, *lastPP); | |
782 | } | |
783 | ||
784 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
785 | ||
7c743825 | 786 | void |
252b5132 RH |
787 | verify_symbol_chain (rootP, lastP) |
788 | symbolS *rootP; | |
789 | symbolS *lastP; | |
790 | { | |
791 | symbolS *symbolP = rootP; | |
792 | ||
793 | if (symbolP == NULL) | |
794 | return; | |
795 | ||
796 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
797 | { | |
49309057 ILT |
798 | #ifdef BFD_ASSEMBLER |
799 | assert (symbolP->bsym != NULL); | |
800 | #endif | |
252b5132 RH |
801 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
802 | assert (symbolP->sy_next->sy_previous == symbolP); | |
803 | #else | |
804 | /* Walk the list anyways, to make sure pointers are still good. */ | |
805 | ; | |
806 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
807 | } | |
808 | ||
809 | assert (lastP == symbolP); | |
810 | } | |
811 | ||
812 | void | |
813 | verify_symbol_chain_2 (sym) | |
814 | symbolS *sym; | |
815 | { | |
816 | symbolS *p = sym, *n = sym; | |
817 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
818 | while (symbol_previous (p)) | |
819 | p = symbol_previous (p); | |
820 | #endif | |
821 | while (symbol_next (n)) | |
822 | n = symbol_next (n); | |
823 | verify_symbol_chain (p, n); | |
824 | } | |
825 | ||
826 | /* Resolve the value of a symbol. This is called during the final | |
827 | pass over the symbol table to resolve any symbols with complex | |
828 | values. */ | |
829 | ||
830 | valueT | |
6386f3a7 | 831 | resolve_symbol_value (symp) |
252b5132 | 832 | symbolS *symp; |
252b5132 RH |
833 | { |
834 | int resolved; | |
835 | valueT final_val; | |
836 | segT final_seg; | |
837 | ||
a1605869 | 838 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
839 | if (LOCAL_SYMBOL_CHECK (symp)) |
840 | { | |
841 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
842 | ||
bd780143 | 843 | final_val = locsym->lsy_value; |
49309057 | 844 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 845 | return final_val; |
49309057 | 846 | |
bd780143 | 847 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 848 | |
6386f3a7 | 849 | if (finalize_syms) |
49309057 | 850 | { |
bd780143 | 851 | locsym->lsy_value = final_val; |
49309057 ILT |
852 | local_symbol_mark_resolved (locsym); |
853 | } | |
854 | ||
855 | return final_val; | |
856 | } | |
a1605869 | 857 | #endif |
49309057 | 858 | |
252b5132 RH |
859 | if (symp->sy_resolved) |
860 | { | |
861 | if (symp->sy_value.X_op == O_constant) | |
862 | return (valueT) symp->sy_value.X_add_number; | |
863 | else | |
864 | return 0; | |
865 | } | |
866 | ||
867 | resolved = 0; | |
868 | final_seg = S_GET_SEGMENT (symp); | |
869 | ||
870 | if (symp->sy_resolving) | |
871 | { | |
6386f3a7 | 872 | if (finalize_syms) |
0e389e77 | 873 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 874 | S_GET_NAME (symp)); |
252b5132 RH |
875 | final_val = 0; |
876 | resolved = 1; | |
877 | } | |
878 | else | |
879 | { | |
880 | symbolS *add_symbol, *op_symbol; | |
881 | offsetT left, right; | |
882 | segT seg_left, seg_right; | |
883 | operatorT op; | |
884 | ||
885 | symp->sy_resolving = 1; | |
886 | ||
887 | /* Help out with CSE. */ | |
888 | add_symbol = symp->sy_value.X_add_symbol; | |
889 | op_symbol = symp->sy_value.X_op_symbol; | |
890 | final_val = symp->sy_value.X_add_number; | |
891 | op = symp->sy_value.X_op; | |
892 | ||
893 | switch (op) | |
894 | { | |
895 | default: | |
896 | BAD_CASE (op); | |
897 | break; | |
898 | ||
899 | case O_absent: | |
900 | final_val = 0; | |
901 | /* Fall through. */ | |
902 | ||
903 | case O_constant: | |
bea9907b | 904 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
905 | if (final_seg == expr_section) |
906 | final_seg = absolute_section; | |
907 | resolved = 1; | |
908 | break; | |
909 | ||
910 | case O_symbol: | |
911 | case O_symbol_rva: | |
6386f3a7 | 912 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
913 | seg_left = S_GET_SEGMENT (add_symbol); |
914 | if (finalize_syms) | |
915 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 916 | |
e0890092 | 917 | do_symbol: |
252b5132 RH |
918 | if (symp->sy_mri_common) |
919 | { | |
920 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
921 | relocation routines are going to handle it specially. |
922 | Don't change the value. */ | |
49309057 | 923 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
924 | break; |
925 | } | |
926 | ||
6386f3a7 | 927 | if (finalize_syms && final_val == 0) |
49309057 ILT |
928 | { |
929 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
930 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
931 | add_symbol); | |
932 | copy_symbol_attributes (symp, add_symbol); | |
933 | } | |
252b5132 | 934 | |
e0890092 AM |
935 | /* If we have equated this symbol to an undefined or common |
936 | symbol, keep X_op set to O_symbol, and don't change | |
937 | X_add_number. This permits the routine which writes out | |
938 | relocation to detect this case, and convert the | |
939 | relocation to be against the symbol to which this symbol | |
940 | is equated. */ | |
252b5132 RH |
941 | if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol)) |
942 | { | |
6386f3a7 | 943 | if (finalize_syms) |
252b5132 | 944 | { |
252b5132 RH |
945 | symp->sy_value.X_op = O_symbol; |
946 | symp->sy_value.X_add_symbol = add_symbol; | |
947 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
948 | /* Use X_op_symbol as a flag. */ |
949 | symp->sy_value.X_op_symbol = add_symbol; | |
950 | final_seg = seg_left; | |
252b5132 RH |
951 | } |
952 | final_val = 0; | |
49309057 | 953 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 954 | symp->sy_resolving = 0; |
252b5132 RH |
955 | goto exit_dont_set_value; |
956 | } | |
e0890092 AM |
957 | else if (finalize_syms && final_seg == expr_section |
958 | && seg_left != expr_section) | |
959 | { | |
960 | /* If the symbol is an expression symbol, do similarly | |
961 | as for undefined and common syms above. Handles | |
962 | "sym +/- expr" where "expr" cannot be evaluated | |
963 | immediately, and we want relocations to be against | |
964 | "sym", eg. because it is weak. */ | |
965 | symp->sy_value.X_op = O_symbol; | |
966 | symp->sy_value.X_add_symbol = add_symbol; | |
967 | symp->sy_value.X_add_number = final_val; | |
968 | symp->sy_value.X_op_symbol = add_symbol; | |
969 | final_seg = seg_left; | |
970 | final_val += symp->sy_frag->fr_address + left; | |
971 | resolved = symbol_resolved_p (add_symbol); | |
972 | symp->sy_resolving = 0; | |
973 | goto exit_dont_set_value; | |
974 | } | |
252b5132 RH |
975 | else |
976 | { | |
977 | final_val += symp->sy_frag->fr_address + left; | |
978 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 979 | final_seg = seg_left; |
252b5132 RH |
980 | } |
981 | ||
49309057 | 982 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
983 | break; |
984 | ||
985 | case O_uminus: | |
986 | case O_bit_not: | |
987 | case O_logical_not: | |
6386f3a7 | 988 | left = resolve_symbol_value (add_symbol); |
252b5132 RH |
989 | |
990 | if (op == O_uminus) | |
991 | left = -left; | |
992 | else if (op == O_logical_not) | |
993 | left = !left; | |
994 | else | |
995 | left = ~left; | |
996 | ||
997 | final_val += left + symp->sy_frag->fr_address; | |
998 | if (final_seg == expr_section || final_seg == undefined_section) | |
999 | final_seg = absolute_section; | |
1000 | ||
49309057 | 1001 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1002 | break; |
1003 | ||
1004 | case O_multiply: | |
1005 | case O_divide: | |
1006 | case O_modulus: | |
1007 | case O_left_shift: | |
1008 | case O_right_shift: | |
1009 | case O_bit_inclusive_or: | |
1010 | case O_bit_or_not: | |
1011 | case O_bit_exclusive_or: | |
1012 | case O_bit_and: | |
1013 | case O_add: | |
1014 | case O_subtract: | |
1015 | case O_eq: | |
1016 | case O_ne: | |
1017 | case O_lt: | |
1018 | case O_le: | |
1019 | case O_ge: | |
1020 | case O_gt: | |
1021 | case O_logical_and: | |
1022 | case O_logical_or: | |
6386f3a7 AM |
1023 | left = resolve_symbol_value (add_symbol); |
1024 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1025 | seg_left = S_GET_SEGMENT (add_symbol); |
1026 | seg_right = S_GET_SEGMENT (op_symbol); | |
1027 | ||
1028 | /* Simplify addition or subtraction of a constant by folding the | |
1029 | constant into X_add_number. */ | |
e0890092 | 1030 | if (op == O_add) |
252b5132 RH |
1031 | { |
1032 | if (seg_right == absolute_section) | |
1033 | { | |
e0890092 | 1034 | final_val += right; |
252b5132 RH |
1035 | goto do_symbol; |
1036 | } | |
e0890092 | 1037 | else if (seg_left == absolute_section) |
252b5132 | 1038 | { |
252b5132 RH |
1039 | final_val += left; |
1040 | add_symbol = op_symbol; | |
1041 | left = right; | |
e0890092 AM |
1042 | seg_left = seg_right; |
1043 | goto do_symbol; | |
1044 | } | |
1045 | } | |
1046 | else if (op == O_subtract) | |
1047 | { | |
1048 | if (seg_right == absolute_section) | |
1049 | { | |
1050 | final_val -= right; | |
252b5132 RH |
1051 | goto do_symbol; |
1052 | } | |
1053 | } | |
1054 | ||
e0890092 AM |
1055 | /* Equality and non-equality tests are permitted on anything. |
1056 | Subtraction, and other comparison operators are permitted if | |
1057 | both operands are in the same section. Otherwise, both | |
1058 | operands must be absolute. We already handled the case of | |
1059 | addition or subtraction of a constant above. This will | |
1060 | probably need to be changed for an object file format which | |
1061 | supports arbitrary expressions, such as IEEE-695. | |
1062 | ||
1063 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1064 | otherwise we may get the same message multiple times. */ |
e0890092 AM |
1065 | if (op != O_eq && op != O_ne |
1066 | && (seg_left != absolute_section | |
1067 | || seg_right != absolute_section) | |
1068 | && ((op != O_subtract | |
1069 | && op != O_lt && op != O_le && op != O_ge && op != O_gt) | |
9b4d630b | 1070 | || seg_left != seg_right |
e0890092 AM |
1071 | || (seg_left == undefined_section |
1072 | && add_symbol != op_symbol)) | |
6386f3a7 | 1073 | && finalize_syms) |
252b5132 RH |
1074 | { |
1075 | char *file; | |
1076 | unsigned int line; | |
1077 | ||
1078 | if (expr_symbol_where (symp, &file, &line)) | |
1079 | { | |
1080 | if (seg_left == undefined_section) | |
1081 | as_bad_where (file, line, | |
0e389e77 | 1082 | _("undefined symbol `%s' in operation"), |
252b5132 RH |
1083 | S_GET_NAME (symp->sy_value.X_add_symbol)); |
1084 | if (seg_right == undefined_section) | |
1085 | as_bad_where (file, line, | |
0e389e77 | 1086 | _("undefined symbol `%s' in operation"), |
252b5132 RH |
1087 | S_GET_NAME (symp->sy_value.X_op_symbol)); |
1088 | if (seg_left != undefined_section | |
1089 | && seg_right != undefined_section) | |
7c743825 KH |
1090 | as_bad_where (file, line, |
1091 | _("invalid section for operation")); | |
252b5132 RH |
1092 | } |
1093 | else | |
1094 | { | |
1095 | if (seg_left == undefined_section) | |
0e389e77 | 1096 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), |
252b5132 RH |
1097 | S_GET_NAME (symp->sy_value.X_add_symbol), |
1098 | S_GET_NAME (symp)); | |
1099 | if (seg_right == undefined_section) | |
0e389e77 | 1100 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), |
252b5132 RH |
1101 | S_GET_NAME (symp->sy_value.X_op_symbol), |
1102 | S_GET_NAME (symp)); | |
1103 | if (seg_left != undefined_section | |
1104 | && seg_right != undefined_section) | |
0e389e77 | 1105 | as_bad (_("invalid section for operation setting `%s'"), |
252b5132 RH |
1106 | S_GET_NAME (symp)); |
1107 | } | |
1108 | } | |
1109 | ||
1110 | /* Check for division by zero. */ | |
1111 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1112 | { | |
1113 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1114 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1115 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1116 | { |
1117 | char *file; | |
1118 | unsigned int line; | |
1119 | ||
1120 | if (expr_symbol_where (symp, &file, &line)) | |
1121 | as_bad_where (file, line, _("division by zero")); | |
1122 | else | |
0e389e77 | 1123 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1124 | S_GET_NAME (symp)); |
1125 | } | |
1126 | ||
1127 | right = 1; | |
1128 | } | |
1129 | ||
1130 | switch (symp->sy_value.X_op) | |
1131 | { | |
1132 | case O_multiply: left *= right; break; | |
1133 | case O_divide: left /= right; break; | |
1134 | case O_modulus: left %= right; break; | |
1135 | case O_left_shift: left <<= right; break; | |
1136 | case O_right_shift: left >>= right; break; | |
1137 | case O_bit_inclusive_or: left |= right; break; | |
1138 | case O_bit_or_not: left |= ~right; break; | |
1139 | case O_bit_exclusive_or: left ^= right; break; | |
1140 | case O_bit_and: left &= right; break; | |
1141 | case O_add: left += right; break; | |
1142 | case O_subtract: left -= right; break; | |
e0890092 AM |
1143 | case O_eq: |
1144 | case O_ne: | |
1145 | left = (left == right && seg_left == seg_right | |
1146 | && (seg_left != undefined_section | |
1147 | || add_symbol == op_symbol) | |
1148 | ? ~ (offsetT) 0 : 0); | |
1149 | if (symp->sy_value.X_op == O_ne) | |
1150 | left = ~left; | |
1151 | break; | |
252b5132 RH |
1152 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1153 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1154 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1155 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1156 | case O_logical_and: left = left && right; break; | |
1157 | case O_logical_or: left = left || right; break; | |
1158 | default: abort (); | |
1159 | } | |
1160 | ||
1161 | final_val += symp->sy_frag->fr_address + left; | |
1162 | if (final_seg == expr_section || final_seg == undefined_section) | |
1163 | final_seg = absolute_section; | |
49309057 ILT |
1164 | resolved = (symbol_resolved_p (add_symbol) |
1165 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1166 | break; |
252b5132 RH |
1167 | |
1168 | case O_register: | |
1169 | case O_big: | |
1170 | case O_illegal: | |
1171 | /* Give an error (below) if not in expr_section. We don't | |
1172 | want to worry about expr_section symbols, because they | |
1173 | are fictional (they are created as part of expression | |
1174 | resolution), and any problems may not actually mean | |
1175 | anything. */ | |
1176 | break; | |
1177 | } | |
1178 | ||
1179 | symp->sy_resolving = 0; | |
1180 | } | |
1181 | ||
6386f3a7 | 1182 | if (finalize_syms) |
05bdb37e | 1183 | S_SET_VALUE (symp, final_val); |
252b5132 | 1184 | |
05bdb37e AM |
1185 | exit_dont_set_value: |
1186 | /* Always set the segment, even if not finalizing the value. | |
1187 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1188 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1189 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1190 | for a stab symbol, so we use this bad hack. */ | |
1191 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1192 | #endif |
05bdb37e | 1193 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1194 | |
252b5132 | 1195 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1196 | if (finalize_syms) |
252b5132 RH |
1197 | { |
1198 | if (resolved) | |
1199 | symp->sy_resolved = 1; | |
1200 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1201 | { | |
0e389e77 | 1202 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1203 | S_GET_NAME (symp)); |
252b5132 RH |
1204 | symp->sy_resolved = 1; |
1205 | } | |
1206 | } | |
1207 | ||
1208 | return final_val; | |
1209 | } | |
1210 | ||
49309057 ILT |
1211 | #ifdef BFD_ASSEMBLER |
1212 | ||
1213 | static void resolve_local_symbol PARAMS ((const char *, PTR)); | |
1214 | ||
1215 | /* A static function passed to hash_traverse. */ | |
1216 | ||
1217 | static void | |
1218 | resolve_local_symbol (key, value) | |
ab9da554 | 1219 | const char *key ATTRIBUTE_UNUSED; |
49309057 ILT |
1220 | PTR value; |
1221 | { | |
1222 | if (value != NULL) | |
6386f3a7 | 1223 | resolve_symbol_value (value); |
49309057 ILT |
1224 | } |
1225 | ||
1226 | #endif | |
1227 | ||
1228 | /* Resolve all local symbols. */ | |
1229 | ||
1230 | void | |
1231 | resolve_local_symbol_values () | |
1232 | { | |
1233 | #ifdef BFD_ASSEMBLER | |
1234 | hash_traverse (local_hash, resolve_local_symbol); | |
1235 | #endif | |
1236 | } | |
1237 | ||
252b5132 RH |
1238 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1239 | They are *really* local. That is, they go out of scope whenever we see a | |
1240 | label that isn't local. Also, like fb labels, there can be multiple | |
1241 | instances of a dollar label. Therefor, we name encode each instance with | |
1242 | the instance number, keep a list of defined symbols separate from the real | |
1243 | symbol table, and we treat these buggers as a sparse array. */ | |
1244 | ||
1245 | static long *dollar_labels; | |
1246 | static long *dollar_label_instances; | |
1247 | static char *dollar_label_defines; | |
1248 | static unsigned long dollar_label_count; | |
1249 | static unsigned long dollar_label_max; | |
1250 | ||
7c743825 | 1251 | int |
252b5132 RH |
1252 | dollar_label_defined (label) |
1253 | long label; | |
1254 | { | |
1255 | long *i; | |
1256 | ||
1257 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1258 | ||
1259 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1260 | if (*i == label) | |
1261 | return dollar_label_defines[i - dollar_labels]; | |
1262 | ||
7c743825 | 1263 | /* If we get here, label isn't defined. */ |
252b5132 | 1264 | return 0; |
7c743825 | 1265 | } |
252b5132 RH |
1266 | |
1267 | static long | |
1268 | dollar_label_instance (label) | |
1269 | long label; | |
1270 | { | |
1271 | long *i; | |
1272 | ||
1273 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1274 | ||
1275 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1276 | if (*i == label) | |
1277 | return (dollar_label_instances[i - dollar_labels]); | |
1278 | ||
7c743825 KH |
1279 | /* If we get here, we haven't seen the label before. |
1280 | Therefore its instance count is zero. */ | |
252b5132 RH |
1281 | return 0; |
1282 | } | |
1283 | ||
7c743825 | 1284 | void |
252b5132 RH |
1285 | dollar_label_clear () |
1286 | { | |
1287 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1288 | } | |
1289 | ||
1290 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1291 | ||
7c743825 | 1292 | void |
252b5132 RH |
1293 | define_dollar_label (label) |
1294 | long label; | |
1295 | { | |
1296 | long *i; | |
1297 | ||
1298 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1299 | if (*i == label) | |
1300 | { | |
1301 | ++dollar_label_instances[i - dollar_labels]; | |
1302 | dollar_label_defines[i - dollar_labels] = 1; | |
1303 | return; | |
1304 | } | |
1305 | ||
7c743825 | 1306 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1307 | |
1308 | if (dollar_labels == NULL) | |
1309 | { | |
1310 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1311 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1312 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1313 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1314 | dollar_label_count = 0; | |
1315 | } | |
1316 | else if (dollar_label_count == dollar_label_max) | |
1317 | { | |
1318 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1319 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1320 | dollar_label_max * sizeof (long)); | |
1321 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1322 | dollar_label_max * sizeof (long)); | |
1323 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1324 | } /* if we needed to grow */ |
252b5132 RH |
1325 | |
1326 | dollar_labels[dollar_label_count] = label; | |
1327 | dollar_label_instances[dollar_label_count] = 1; | |
1328 | dollar_label_defines[dollar_label_count] = 1; | |
1329 | ++dollar_label_count; | |
1330 | } | |
1331 | ||
7c743825 KH |
1332 | /* Caller must copy returned name: we re-use the area for the next name. |
1333 | ||
1334 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1335 | where n is the label number and m is the instance number. "L" makes | |
1336 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1337 | ordinary symbol SHOULD get the same name as a local label | |
1338 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1339 | ||
1340 | fb labels get the same treatment, except that ^B is used in place | |
1341 | of ^A. */ | |
1342 | ||
1343 | char * /* Return local label name. */ | |
252b5132 | 1344 | dollar_label_name (n, augend) |
7c743825 KH |
1345 | register long n; /* we just saw "n$:" : n a number. */ |
1346 | register int augend; /* 0 for current instance, 1 for new instance. */ | |
252b5132 RH |
1347 | { |
1348 | long i; | |
7c743825 | 1349 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1350 | static char symbol_name_build[24]; |
1351 | register char *p; | |
1352 | register char *q; | |
7c743825 | 1353 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1354 | |
1355 | know (n >= 0); | |
1356 | know (augend == 0 || augend == 1); | |
1357 | p = symbol_name_build; | |
f84dd1f0 NC |
1358 | #ifdef LOCAL_LABEL_PREFIX |
1359 | *p++ = LOCAL_LABEL_PREFIX; | |
1360 | #endif | |
252b5132 RH |
1361 | *p++ = 'L'; |
1362 | ||
7c743825 KH |
1363 | /* Next code just does sprintf( {}, "%d", n); */ |
1364 | /* Label number. */ | |
252b5132 RH |
1365 | q = symbol_name_temporary; |
1366 | for (*q++ = 0, i = n; i; ++q) | |
1367 | { | |
1368 | *q = i % 10 + '0'; | |
1369 | i /= 10; | |
1370 | } | |
1371 | while ((*p = *--q) != '\0') | |
1372 | ++p; | |
1373 | ||
aa257fcd | 1374 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1375 | |
7c743825 | 1376 | /* Instance number. */ |
252b5132 RH |
1377 | q = symbol_name_temporary; |
1378 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1379 | { | |
1380 | *q = i % 10 + '0'; | |
1381 | i /= 10; | |
1382 | } | |
1383 | while ((*p++ = *--q) != '\0');; | |
1384 | ||
7c743825 | 1385 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1386 | return symbol_name_build; |
1387 | } | |
1388 | ||
7c743825 KH |
1389 | /* Sombody else's idea of local labels. They are made by "n:" where n |
1390 | is any decimal digit. Refer to them with | |
1391 | "nb" for previous (backward) n: | |
1392 | or "nf" for next (forward) n:. | |
1393 | ||
1394 | We do a little better and let n be any number, not just a single digit, but | |
1395 | since the other guy's assembler only does ten, we treat the first ten | |
1396 | specially. | |
1397 | ||
1398 | Like someone else's assembler, we have one set of local label counters for | |
1399 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1400 | implies that one can refer to a label in another segment, and indeed some | |
1401 | crufty compilers have done just that. | |
1402 | ||
1403 | Since there could be a LOT of these things, treat them as a sparse | |
1404 | array. */ | |
252b5132 RH |
1405 | |
1406 | #define FB_LABEL_SPECIAL (10) | |
1407 | ||
1408 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1409 | static long *fb_labels; | |
1410 | static long *fb_label_instances; | |
1411 | static long fb_label_count; | |
1412 | static long fb_label_max; | |
1413 | ||
7c743825 | 1414 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1415 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1416 | ||
7c743825 | 1417 | static void |
252b5132 RH |
1418 | fb_label_init () |
1419 | { | |
1420 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1421 | } |
252b5132 | 1422 | |
7c743825 KH |
1423 | /* Add one to the instance number of this fb label. */ |
1424 | ||
1425 | void | |
252b5132 RH |
1426 | fb_label_instance_inc (label) |
1427 | long label; | |
1428 | { | |
1429 | long *i; | |
1430 | ||
1431 | if (label < FB_LABEL_SPECIAL) | |
1432 | { | |
1433 | ++fb_low_counter[label]; | |
1434 | return; | |
1435 | } | |
1436 | ||
1437 | if (fb_labels != NULL) | |
1438 | { | |
1439 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1440 | i < fb_labels + fb_label_count; ++i) | |
1441 | { | |
1442 | if (*i == label) | |
1443 | { | |
1444 | ++fb_label_instances[i - fb_labels]; | |
1445 | return; | |
7c743825 KH |
1446 | } /* if we find it */ |
1447 | } /* for each existing label */ | |
252b5132 RH |
1448 | } |
1449 | ||
7c743825 | 1450 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1451 | |
1452 | if (fb_labels == NULL) | |
1453 | { | |
1454 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1455 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1456 | fb_label_max = FB_LABEL_BUMP_BY; | |
1457 | fb_label_count = FB_LABEL_SPECIAL; | |
1458 | ||
1459 | } | |
1460 | else if (fb_label_count == fb_label_max) | |
1461 | { | |
1462 | fb_label_max += FB_LABEL_BUMP_BY; | |
1463 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1464 | fb_label_max * sizeof (long)); | |
1465 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1466 | fb_label_max * sizeof (long)); | |
7c743825 | 1467 | } /* if we needed to grow */ |
252b5132 RH |
1468 | |
1469 | fb_labels[fb_label_count] = label; | |
1470 | fb_label_instances[fb_label_count] = 1; | |
1471 | ++fb_label_count; | |
1472 | } | |
1473 | ||
7c743825 | 1474 | static long |
252b5132 RH |
1475 | fb_label_instance (label) |
1476 | long label; | |
1477 | { | |
1478 | long *i; | |
1479 | ||
1480 | if (label < FB_LABEL_SPECIAL) | |
1481 | { | |
1482 | return (fb_low_counter[label]); | |
1483 | } | |
1484 | ||
1485 | if (fb_labels != NULL) | |
1486 | { | |
1487 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1488 | i < fb_labels + fb_label_count; ++i) | |
1489 | { | |
1490 | if (*i == label) | |
1491 | { | |
1492 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1493 | } /* if we find it */ |
1494 | } /* for each existing label */ | |
252b5132 RH |
1495 | } |
1496 | ||
1497 | /* We didn't find the label, so this must be a reference to the | |
1498 | first instance. */ | |
1499 | return 0; | |
1500 | } | |
1501 | ||
7c743825 KH |
1502 | /* Caller must copy returned name: we re-use the area for the next name. |
1503 | ||
1504 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1505 | where n is the label number and m is the instance number. "L" makes | |
1506 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1507 | ordinary symbol SHOULD get the same name as a local label | |
1508 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1509 | ||
1510 | dollar labels get the same treatment, except that ^A is used in | |
1511 | place of ^B. */ | |
1512 | ||
1513 | char * /* Return local label name. */ | |
252b5132 | 1514 | fb_label_name (n, augend) |
7c743825 KH |
1515 | long n; /* We just saw "n:", "nf" or "nb" : n a number. */ |
1516 | long augend; /* 0 for nb, 1 for n:, nf. */ | |
252b5132 RH |
1517 | { |
1518 | long i; | |
7c743825 | 1519 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1520 | static char symbol_name_build[24]; |
1521 | register char *p; | |
1522 | register char *q; | |
7c743825 | 1523 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1524 | |
1525 | know (n >= 0); | |
1526 | know (augend == 0 || augend == 1); | |
1527 | p = symbol_name_build; | |
aa257fcd NC |
1528 | #ifdef LOCAL_LABEL_PREFIX |
1529 | *p++ = LOCAL_LABEL_PREFIX; | |
1530 | #endif | |
252b5132 RH |
1531 | *p++ = 'L'; |
1532 | ||
7c743825 KH |
1533 | /* Next code just does sprintf( {}, "%d", n); */ |
1534 | /* Label number. */ | |
252b5132 RH |
1535 | q = symbol_name_temporary; |
1536 | for (*q++ = 0, i = n; i; ++q) | |
1537 | { | |
1538 | *q = i % 10 + '0'; | |
1539 | i /= 10; | |
1540 | } | |
1541 | while ((*p = *--q) != '\0') | |
1542 | ++p; | |
1543 | ||
aa257fcd | 1544 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1545 | |
7c743825 | 1546 | /* Instance number. */ |
252b5132 RH |
1547 | q = symbol_name_temporary; |
1548 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1549 | { | |
1550 | *q = i % 10 + '0'; | |
1551 | i /= 10; | |
1552 | } | |
1553 | while ((*p++ = *--q) != '\0');; | |
1554 | ||
7c743825 | 1555 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1556 | return (symbol_name_build); |
7c743825 | 1557 | } |
252b5132 | 1558 | |
7c743825 KH |
1559 | /* Decode name that may have been generated by foo_label_name() above. |
1560 | If the name wasn't generated by foo_label_name(), then return it | |
1561 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1562 | |
1563 | char * | |
1564 | decode_local_label_name (s) | |
1565 | char *s; | |
1566 | { | |
1567 | char *p; | |
1568 | char *symbol_decode; | |
1569 | int label_number; | |
1570 | int instance_number; | |
1571 | char *type; | |
d95767bf | 1572 | const char *message_format; |
aa257fcd | 1573 | int index = 0; |
43ad3147 | 1574 | |
aa257fcd NC |
1575 | #ifdef LOCAL_LABEL_PREFIX |
1576 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1577 | ++index; | |
1578 | #endif | |
43ad3147 | 1579 | |
aa257fcd | 1580 | if (s[index] != 'L') |
252b5132 RH |
1581 | return s; |
1582 | ||
3882b010 | 1583 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1584 | label_number = (10 * label_number) + *p - '0'; |
1585 | ||
aa257fcd | 1586 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1587 | type = "dollar"; |
aa257fcd | 1588 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1589 | type = "fb"; |
1590 | else | |
1591 | return s; | |
1592 | ||
3882b010 | 1593 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1594 | instance_number = (10 * instance_number) + *p - '0'; |
1595 | ||
d95767bf | 1596 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1597 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1598 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1599 | ||
1600 | return symbol_decode; | |
1601 | } | |
1602 | ||
1603 | /* Get the value of a symbol. */ | |
1604 | ||
1605 | valueT | |
1606 | S_GET_VALUE (s) | |
1607 | symbolS *s; | |
1608 | { | |
a1605869 | 1609 | #ifdef BFD_ASSEMBLER |
49309057 | 1610 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1611 | return resolve_symbol_value (s); |
a1605869 | 1612 | #endif |
49309057 | 1613 | |
ac62c346 | 1614 | if (!s->sy_resolved) |
e46d99eb | 1615 | { |
6386f3a7 AM |
1616 | valueT val = resolve_symbol_value (s); |
1617 | if (!finalize_syms) | |
e46d99eb AM |
1618 | return val; |
1619 | } | |
252b5132 RH |
1620 | if (s->sy_value.X_op != O_constant) |
1621 | { | |
1622 | static symbolS *recur; | |
1623 | ||
1624 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1625 | may call S_GET_VALUE. We use a static symbol to avoid the | |
1626 | immediate recursion. */ | |
1627 | if (recur == s) | |
1628 | return (valueT) s->sy_value.X_add_number; | |
1629 | recur = s; | |
1630 | if (! s->sy_resolved | |
1631 | || s->sy_value.X_op != O_symbol | |
1632 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1633 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1634 | S_GET_NAME (s)); |
1635 | recur = NULL; | |
1636 | } | |
1637 | return (valueT) s->sy_value.X_add_number; | |
1638 | } | |
1639 | ||
1640 | /* Set the value of a symbol. */ | |
1641 | ||
1642 | void | |
1643 | S_SET_VALUE (s, val) | |
1644 | symbolS *s; | |
1645 | valueT val; | |
1646 | { | |
a1605869 | 1647 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1648 | if (LOCAL_SYMBOL_CHECK (s)) |
1649 | { | |
bd780143 | 1650 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1651 | return; |
1652 | } | |
a1605869 | 1653 | #endif |
49309057 | 1654 | |
252b5132 RH |
1655 | s->sy_value.X_op = O_constant; |
1656 | s->sy_value.X_add_number = (offsetT) val; | |
1657 | s->sy_value.X_unsigned = 0; | |
1658 | } | |
1659 | ||
1660 | void | |
1661 | copy_symbol_attributes (dest, src) | |
1662 | symbolS *dest, *src; | |
1663 | { | |
49309057 | 1664 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1665 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1666 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1667 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1668 | |
252b5132 RH |
1669 | #ifdef BFD_ASSEMBLER |
1670 | /* In an expression, transfer the settings of these flags. | |
1671 | The user can override later, of course. */ | |
1672 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1673 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1674 | #endif | |
1675 | ||
1676 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1677 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1678 | #endif | |
1679 | } | |
1680 | ||
1681 | #ifdef BFD_ASSEMBLER | |
1682 | ||
1683 | int | |
1684 | S_IS_FUNCTION (s) | |
1685 | symbolS *s; | |
1686 | { | |
49309057 ILT |
1687 | flagword flags; |
1688 | ||
1689 | if (LOCAL_SYMBOL_CHECK (s)) | |
1690 | return 0; | |
1691 | ||
1692 | flags = s->bsym->flags; | |
252b5132 RH |
1693 | |
1694 | return (flags & BSF_FUNCTION) != 0; | |
1695 | } | |
1696 | ||
1697 | int | |
1698 | S_IS_EXTERNAL (s) | |
1699 | symbolS *s; | |
1700 | { | |
49309057 ILT |
1701 | flagword flags; |
1702 | ||
1703 | if (LOCAL_SYMBOL_CHECK (s)) | |
1704 | return 0; | |
1705 | ||
1706 | flags = s->bsym->flags; | |
252b5132 | 1707 | |
7c743825 | 1708 | /* Sanity check. */ |
252b5132 RH |
1709 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1710 | abort (); | |
1711 | ||
1712 | return (flags & BSF_GLOBAL) != 0; | |
1713 | } | |
1714 | ||
1715 | int | |
1716 | S_IS_WEAK (s) | |
1717 | symbolS *s; | |
1718 | { | |
49309057 ILT |
1719 | if (LOCAL_SYMBOL_CHECK (s)) |
1720 | return 0; | |
252b5132 RH |
1721 | return (s->bsym->flags & BSF_WEAK) != 0; |
1722 | } | |
1723 | ||
1724 | int | |
1725 | S_IS_COMMON (s) | |
1726 | symbolS *s; | |
1727 | { | |
49309057 ILT |
1728 | if (LOCAL_SYMBOL_CHECK (s)) |
1729 | return 0; | |
252b5132 RH |
1730 | return bfd_is_com_section (s->bsym->section); |
1731 | } | |
1732 | ||
1733 | int | |
1734 | S_IS_DEFINED (s) | |
1735 | symbolS *s; | |
1736 | { | |
49309057 ILT |
1737 | if (LOCAL_SYMBOL_CHECK (s)) |
1738 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1739 | return s->bsym->section != undefined_section; |
1740 | } | |
1741 | ||
1742 | int | |
1743 | S_IS_DEBUG (s) | |
1744 | symbolS *s; | |
1745 | { | |
49309057 ILT |
1746 | if (LOCAL_SYMBOL_CHECK (s)) |
1747 | return 0; | |
252b5132 RH |
1748 | if (s->bsym->flags & BSF_DEBUGGING) |
1749 | return 1; | |
1750 | return 0; | |
1751 | } | |
1752 | ||
1753 | int | |
1754 | S_IS_LOCAL (s) | |
1755 | symbolS *s; | |
1756 | { | |
49309057 | 1757 | flagword flags; |
252b5132 RH |
1758 | const char *name; |
1759 | ||
49309057 ILT |
1760 | if (LOCAL_SYMBOL_CHECK (s)) |
1761 | return 1; | |
1762 | ||
1763 | flags = s->bsym->flags; | |
1764 | ||
7c743825 | 1765 | /* Sanity check. */ |
252b5132 RH |
1766 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1767 | abort (); | |
1768 | ||
1769 | if (bfd_get_section (s->bsym) == reg_section) | |
1770 | return 1; | |
1771 | ||
1772 | if (flag_strip_local_absolute | |
1773 | && (flags & BSF_GLOBAL) == 0 | |
1774 | && bfd_get_section (s->bsym) == absolute_section) | |
1775 | return 1; | |
1776 | ||
1777 | name = S_GET_NAME (s); | |
1778 | return (name != NULL | |
1779 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1780 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1781 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1782 | || (! flag_keep_locals |
1783 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1784 | || (flag_mri | |
1785 | && name[0] == '?' | |
1786 | && name[1] == '?'))))); | |
1787 | } | |
1788 | ||
1789 | int | |
1790 | S_IS_EXTERN (s) | |
1791 | symbolS *s; | |
1792 | { | |
1793 | return S_IS_EXTERNAL (s); | |
1794 | } | |
1795 | ||
1796 | int | |
1797 | S_IS_STABD (s) | |
1798 | symbolS *s; | |
1799 | { | |
1800 | return S_GET_NAME (s) == 0; | |
1801 | } | |
1802 | ||
1803 | CONST char * | |
1804 | S_GET_NAME (s) | |
1805 | symbolS *s; | |
1806 | { | |
49309057 ILT |
1807 | if (LOCAL_SYMBOL_CHECK (s)) |
1808 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1809 | return s->bsym->name; |
1810 | } | |
1811 | ||
1812 | segT | |
1813 | S_GET_SEGMENT (s) | |
1814 | symbolS *s; | |
1815 | { | |
49309057 ILT |
1816 | if (LOCAL_SYMBOL_CHECK (s)) |
1817 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1818 | return s->bsym->section; |
1819 | } | |
1820 | ||
1821 | void | |
1822 | S_SET_SEGMENT (s, seg) | |
1823 | symbolS *s; | |
1824 | segT seg; | |
1825 | { | |
1826 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1827 | faults assigning back to const global symbols such as *ABS*, but it | |
1828 | shouldn't happen anyway. */ | |
1829 | ||
49309057 ILT |
1830 | if (LOCAL_SYMBOL_CHECK (s)) |
1831 | { | |
1832 | if (seg == reg_section) | |
1833 | s = local_symbol_convert ((struct local_symbol *) s); | |
1834 | else | |
1835 | { | |
1836 | ((struct local_symbol *) s)->lsy_section = seg; | |
1837 | return; | |
1838 | } | |
1839 | } | |
1840 | ||
252b5132 RH |
1841 | if (s->bsym->flags & BSF_SECTION_SYM) |
1842 | { | |
1843 | if (s->bsym->section != seg) | |
7c743825 | 1844 | abort (); |
252b5132 RH |
1845 | } |
1846 | else | |
1847 | s->bsym->section = seg; | |
1848 | } | |
1849 | ||
1850 | void | |
1851 | S_SET_EXTERNAL (s) | |
1852 | symbolS *s; | |
1853 | { | |
49309057 ILT |
1854 | if (LOCAL_SYMBOL_CHECK (s)) |
1855 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1856 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1857 | { | |
1858 | /* Let .weak override .global. */ | |
1859 | return; | |
1860 | } | |
4d7c34bf NC |
1861 | if (s->bsym->flags & BSF_SECTION_SYM) |
1862 | { | |
1863 | char * file; | |
1864 | unsigned int line; | |
1865 | ||
1866 | /* Do not reassign section symbols. */ | |
1867 | as_where (& file, & line); | |
1868 | as_warn_where (file, line, | |
0e389e77 | 1869 | _("section symbols are already global")); |
4d7c34bf NC |
1870 | return; |
1871 | } | |
252b5132 | 1872 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1873 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
252b5132 RH |
1874 | } |
1875 | ||
1876 | void | |
1877 | S_CLEAR_EXTERNAL (s) | |
1878 | symbolS *s; | |
1879 | { | |
49309057 ILT |
1880 | if (LOCAL_SYMBOL_CHECK (s)) |
1881 | return; | |
252b5132 RH |
1882 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1883 | { | |
1884 | /* Let .weak override. */ | |
1885 | return; | |
1886 | } | |
1887 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1888 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1889 | } |
1890 | ||
1891 | void | |
1892 | S_SET_WEAK (s) | |
1893 | symbolS *s; | |
1894 | { | |
49309057 ILT |
1895 | if (LOCAL_SYMBOL_CHECK (s)) |
1896 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1897 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1898 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1899 | } |
1900 | ||
1901 | void | |
1902 | S_SET_NAME (s, name) | |
1903 | symbolS *s; | |
1904 | char *name; | |
1905 | { | |
49309057 ILT |
1906 | if (LOCAL_SYMBOL_CHECK (s)) |
1907 | { | |
1908 | ((struct local_symbol *) s)->lsy_name = name; | |
1909 | return; | |
1910 | } | |
252b5132 RH |
1911 | s->bsym->name = name; |
1912 | } | |
1913 | #endif /* BFD_ASSEMBLER */ | |
1914 | ||
49309057 ILT |
1915 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
1916 | ||
1917 | /* Return the previous symbol in a chain. */ | |
1918 | ||
1919 | symbolS * | |
1920 | symbol_previous (s) | |
1921 | symbolS *s; | |
1922 | { | |
1923 | if (LOCAL_SYMBOL_CHECK (s)) | |
1924 | abort (); | |
1925 | return s->sy_previous; | |
1926 | } | |
1927 | ||
1928 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
1929 | ||
1930 | /* Return the next symbol in a chain. */ | |
1931 | ||
1932 | symbolS * | |
1933 | symbol_next (s) | |
1934 | symbolS *s; | |
1935 | { | |
1936 | if (LOCAL_SYMBOL_CHECK (s)) | |
1937 | abort (); | |
1938 | return s->sy_next; | |
1939 | } | |
1940 | ||
1941 | /* Return a pointer to the value of a symbol as an expression. */ | |
1942 | ||
1943 | expressionS * | |
1944 | symbol_get_value_expression (s) | |
1945 | symbolS *s; | |
1946 | { | |
1947 | if (LOCAL_SYMBOL_CHECK (s)) | |
1948 | s = local_symbol_convert ((struct local_symbol *) s); | |
1949 | return &s->sy_value; | |
1950 | } | |
1951 | ||
1952 | /* Set the value of a symbol to an expression. */ | |
1953 | ||
1954 | void | |
1955 | symbol_set_value_expression (s, exp) | |
1956 | symbolS *s; | |
1957 | const expressionS *exp; | |
1958 | { | |
1959 | if (LOCAL_SYMBOL_CHECK (s)) | |
1960 | s = local_symbol_convert ((struct local_symbol *) s); | |
1961 | s->sy_value = *exp; | |
1962 | } | |
1963 | ||
1964 | /* Set the frag of a symbol. */ | |
1965 | ||
1966 | void | |
1967 | symbol_set_frag (s, f) | |
1968 | symbolS *s; | |
1969 | fragS *f; | |
1970 | { | |
a1605869 | 1971 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1972 | if (LOCAL_SYMBOL_CHECK (s)) |
1973 | { | |
1974 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
1975 | return; | |
1976 | } | |
a1605869 | 1977 | #endif |
49309057 ILT |
1978 | s->sy_frag = f; |
1979 | } | |
1980 | ||
1981 | /* Return the frag of a symbol. */ | |
1982 | ||
1983 | fragS * | |
1984 | symbol_get_frag (s) | |
1985 | symbolS *s; | |
1986 | { | |
a1605869 | 1987 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1988 | if (LOCAL_SYMBOL_CHECK (s)) |
1989 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 1990 | #endif |
49309057 ILT |
1991 | return s->sy_frag; |
1992 | } | |
1993 | ||
1994 | /* Mark a symbol as having been used. */ | |
1995 | ||
1996 | void | |
1997 | symbol_mark_used (s) | |
1998 | symbolS *s; | |
1999 | { | |
2000 | if (LOCAL_SYMBOL_CHECK (s)) | |
2001 | return; | |
2002 | s->sy_used = 1; | |
2003 | } | |
2004 | ||
2005 | /* Clear the mark of whether a symbol has been used. */ | |
2006 | ||
2007 | void | |
2008 | symbol_clear_used (s) | |
2009 | symbolS *s; | |
2010 | { | |
2011 | if (LOCAL_SYMBOL_CHECK (s)) | |
2012 | s = local_symbol_convert ((struct local_symbol *) s); | |
2013 | s->sy_used = 0; | |
2014 | } | |
2015 | ||
2016 | /* Return whether a symbol has been used. */ | |
2017 | ||
2018 | int | |
2019 | symbol_used_p (s) | |
2020 | symbolS *s; | |
2021 | { | |
2022 | if (LOCAL_SYMBOL_CHECK (s)) | |
2023 | return 1; | |
2024 | return s->sy_used; | |
2025 | } | |
2026 | ||
2027 | /* Mark a symbol as having been used in a reloc. */ | |
2028 | ||
2029 | void | |
2030 | symbol_mark_used_in_reloc (s) | |
2031 | symbolS *s; | |
2032 | { | |
2033 | if (LOCAL_SYMBOL_CHECK (s)) | |
2034 | s = local_symbol_convert ((struct local_symbol *) s); | |
2035 | s->sy_used_in_reloc = 1; | |
2036 | } | |
2037 | ||
2038 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2039 | ||
2040 | void | |
2041 | symbol_clear_used_in_reloc (s) | |
2042 | symbolS *s; | |
2043 | { | |
2044 | if (LOCAL_SYMBOL_CHECK (s)) | |
2045 | return; | |
2046 | s->sy_used_in_reloc = 0; | |
2047 | } | |
2048 | ||
2049 | /* Return whether a symbol has been used in a reloc. */ | |
2050 | ||
2051 | int | |
2052 | symbol_used_in_reloc_p (s) | |
2053 | symbolS *s; | |
2054 | { | |
2055 | if (LOCAL_SYMBOL_CHECK (s)) | |
2056 | return 0; | |
2057 | return s->sy_used_in_reloc; | |
2058 | } | |
2059 | ||
2060 | /* Mark a symbol as an MRI common symbol. */ | |
2061 | ||
2062 | void | |
2063 | symbol_mark_mri_common (s) | |
2064 | symbolS *s; | |
2065 | { | |
2066 | if (LOCAL_SYMBOL_CHECK (s)) | |
2067 | s = local_symbol_convert ((struct local_symbol *) s); | |
2068 | s->sy_mri_common = 1; | |
2069 | } | |
2070 | ||
2071 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2072 | ||
2073 | void | |
2074 | symbol_clear_mri_common (s) | |
2075 | symbolS *s; | |
2076 | { | |
2077 | if (LOCAL_SYMBOL_CHECK (s)) | |
2078 | return; | |
2079 | s->sy_mri_common = 0; | |
2080 | } | |
2081 | ||
2082 | /* Return whether a symbol is an MRI common symbol. */ | |
2083 | ||
2084 | int | |
2085 | symbol_mri_common_p (s) | |
2086 | symbolS *s; | |
2087 | { | |
2088 | if (LOCAL_SYMBOL_CHECK (s)) | |
2089 | return 0; | |
2090 | return s->sy_mri_common; | |
2091 | } | |
2092 | ||
2093 | /* Mark a symbol as having been written. */ | |
2094 | ||
2095 | void | |
2096 | symbol_mark_written (s) | |
2097 | symbolS *s; | |
2098 | { | |
2099 | if (LOCAL_SYMBOL_CHECK (s)) | |
2100 | return; | |
2101 | s->written = 1; | |
2102 | } | |
2103 | ||
2104 | /* Clear the mark of whether a symbol has been written. */ | |
2105 | ||
2106 | void | |
2107 | symbol_clear_written (s) | |
2108 | symbolS *s; | |
2109 | { | |
2110 | if (LOCAL_SYMBOL_CHECK (s)) | |
2111 | return; | |
2112 | s->written = 0; | |
2113 | } | |
2114 | ||
2115 | /* Return whether a symbol has been written. */ | |
2116 | ||
2117 | int | |
2118 | symbol_written_p (s) | |
2119 | symbolS *s; | |
2120 | { | |
2121 | if (LOCAL_SYMBOL_CHECK (s)) | |
2122 | return 0; | |
2123 | return s->written; | |
2124 | } | |
2125 | ||
2126 | /* Mark a symbol has having been resolved. */ | |
2127 | ||
2128 | void | |
2129 | symbol_mark_resolved (s) | |
2130 | symbolS *s; | |
2131 | { | |
a1605869 | 2132 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2133 | if (LOCAL_SYMBOL_CHECK (s)) |
2134 | { | |
2135 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2136 | return; | |
2137 | } | |
a1605869 | 2138 | #endif |
49309057 ILT |
2139 | s->sy_resolved = 1; |
2140 | } | |
2141 | ||
2142 | /* Return whether a symbol has been resolved. */ | |
2143 | ||
2144 | int | |
2145 | symbol_resolved_p (s) | |
2146 | symbolS *s; | |
2147 | { | |
a1605869 | 2148 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2149 | if (LOCAL_SYMBOL_CHECK (s)) |
2150 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2151 | #endif |
49309057 ILT |
2152 | return s->sy_resolved; |
2153 | } | |
2154 | ||
2155 | /* Return whether a symbol is a section symbol. */ | |
2156 | ||
2157 | int | |
2158 | symbol_section_p (s) | |
a04b544b | 2159 | symbolS *s ATTRIBUTE_UNUSED; |
49309057 ILT |
2160 | { |
2161 | if (LOCAL_SYMBOL_CHECK (s)) | |
2162 | return 0; | |
2163 | #ifdef BFD_ASSEMBLER | |
2164 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2165 | #else | |
7c743825 | 2166 | /* FIXME. */ |
49309057 ILT |
2167 | return 0; |
2168 | #endif | |
2169 | } | |
2170 | ||
2171 | /* Return whether a symbol is equated to another symbol. */ | |
2172 | ||
2173 | int | |
2174 | symbol_equated_p (s) | |
2175 | symbolS *s; | |
2176 | { | |
2177 | if (LOCAL_SYMBOL_CHECK (s)) | |
2178 | return 0; | |
2179 | return s->sy_value.X_op == O_symbol; | |
2180 | } | |
2181 | ||
e0890092 AM |
2182 | /* Return whether a symbol is equated to another symbol, and should be |
2183 | treated specially when writing out relocs. */ | |
2184 | ||
2185 | int | |
2186 | symbol_equated_reloc_p (s) | |
2187 | symbolS *s; | |
2188 | { | |
2189 | if (LOCAL_SYMBOL_CHECK (s)) | |
2190 | return 0; | |
2191 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2192 | resolve_symbol_value to flag expression syms that have been | |
2193 | equated. */ | |
2194 | return (s->sy_value.X_op == O_symbol | |
2195 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) | |
2196 | || ! S_IS_DEFINED (s) | |
2197 | || S_IS_COMMON (s))); | |
2198 | } | |
2199 | ||
49309057 ILT |
2200 | /* Return whether a symbol has a constant value. */ |
2201 | ||
2202 | int | |
2203 | symbol_constant_p (s) | |
2204 | symbolS *s; | |
2205 | { | |
2206 | if (LOCAL_SYMBOL_CHECK (s)) | |
2207 | return 1; | |
2208 | return s->sy_value.X_op == O_constant; | |
2209 | } | |
2210 | ||
2211 | #ifdef BFD_ASSEMBLER | |
2212 | ||
2213 | /* Return the BFD symbol for a symbol. */ | |
2214 | ||
2215 | asymbol * | |
2216 | symbol_get_bfdsym (s) | |
2217 | symbolS *s; | |
2218 | { | |
2219 | if (LOCAL_SYMBOL_CHECK (s)) | |
2220 | s = local_symbol_convert ((struct local_symbol *) s); | |
2221 | return s->bsym; | |
2222 | } | |
2223 | ||
2224 | /* Set the BFD symbol for a symbol. */ | |
2225 | ||
2226 | void | |
2227 | symbol_set_bfdsym (s, bsym) | |
2228 | symbolS *s; | |
2229 | asymbol *bsym; | |
2230 | { | |
2231 | if (LOCAL_SYMBOL_CHECK (s)) | |
2232 | s = local_symbol_convert ((struct local_symbol *) s); | |
2233 | s->bsym = bsym; | |
2234 | } | |
2235 | ||
2236 | #endif /* BFD_ASSEMBLER */ | |
2237 | ||
2238 | #ifdef OBJ_SYMFIELD_TYPE | |
2239 | ||
2240 | /* Get a pointer to the object format information for a symbol. */ | |
2241 | ||
2242 | OBJ_SYMFIELD_TYPE * | |
2243 | symbol_get_obj (s) | |
2244 | symbolS *s; | |
2245 | { | |
2246 | if (LOCAL_SYMBOL_CHECK (s)) | |
2247 | s = local_symbol_convert ((struct local_symbol *) s); | |
2248 | return &s->sy_obj; | |
2249 | } | |
2250 | ||
2251 | /* Set the object format information for a symbol. */ | |
2252 | ||
2253 | void | |
2254 | symbol_set_obj (s, o) | |
2255 | symbolS *s; | |
2256 | OBJ_SYMFIELD_TYPE *o; | |
2257 | { | |
2258 | if (LOCAL_SYMBOL_CHECK (s)) | |
2259 | s = local_symbol_convert ((struct local_symbol *) s); | |
2260 | s->sy_obj = *o; | |
2261 | } | |
2262 | ||
2263 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2264 | ||
2265 | #ifdef TC_SYMFIELD_TYPE | |
2266 | ||
2267 | /* Get a pointer to the processor information for a symbol. */ | |
2268 | ||
2269 | TC_SYMFIELD_TYPE * | |
2270 | symbol_get_tc (s) | |
2271 | symbolS *s; | |
2272 | { | |
2273 | if (LOCAL_SYMBOL_CHECK (s)) | |
2274 | s = local_symbol_convert ((struct local_symbol *) s); | |
2275 | return &s->sy_tc; | |
2276 | } | |
2277 | ||
2278 | /* Set the processor information for a symbol. */ | |
2279 | ||
2280 | void | |
bf27257e | 2281 | symbol_set_tc (s, o) |
49309057 ILT |
2282 | symbolS *s; |
2283 | TC_SYMFIELD_TYPE *o; | |
2284 | { | |
2285 | if (LOCAL_SYMBOL_CHECK (s)) | |
2286 | s = local_symbol_convert ((struct local_symbol *) s); | |
2287 | s->sy_tc = *o; | |
2288 | } | |
2289 | ||
2290 | #endif /* TC_SYMFIELD_TYPE */ | |
2291 | ||
252b5132 RH |
2292 | void |
2293 | symbol_begin () | |
2294 | { | |
2295 | symbol_lastP = NULL; | |
7c743825 | 2296 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2297 | sy_hash = hash_new (); |
49309057 ILT |
2298 | #ifdef BFD_ASSEMBLER |
2299 | local_hash = hash_new (); | |
2300 | #endif | |
252b5132 RH |
2301 | |
2302 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2303 | #ifdef BFD_ASSEMBLER | |
2304 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2305 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2306 | #endif | |
2307 | #else | |
7c743825 | 2308 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2309 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2310 | #endif | |
2311 | abs_symbol.sy_value.X_op = O_constant; | |
2312 | abs_symbol.sy_frag = &zero_address_frag; | |
2313 | ||
2314 | if (LOCAL_LABELS_FB) | |
2315 | fb_label_init (); | |
2316 | } | |
252b5132 RH |
2317 | \f |
2318 | int indent_level; | |
2319 | ||
2320 | /* Maximum indent level. | |
2321 | Available for modification inside a gdb session. */ | |
2322 | int max_indent_level = 8; | |
2323 | ||
2324 | #if 0 | |
2325 | ||
2326 | static void | |
2327 | indent () | |
2328 | { | |
2329 | printf ("%*s", indent_level * 4, ""); | |
2330 | } | |
2331 | ||
2332 | #endif | |
2333 | ||
2334 | void | |
2335 | print_symbol_value_1 (file, sym) | |
2336 | FILE *file; | |
2337 | symbolS *sym; | |
2338 | { | |
2339 | const char *name = S_GET_NAME (sym); | |
2340 | if (!name || !name[0]) | |
2341 | name = "(unnamed)"; | |
2342 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2343 | |
2344 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2345 | { | |
a1605869 | 2346 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2347 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2348 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2349 | && local_symbol_get_frag (locsym) != NULL) | |
2350 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2351 | if (local_symbol_resolved_p (locsym)) | |
2352 | fprintf (file, " resolved"); | |
2353 | fprintf (file, " local"); | |
a1605869 | 2354 | #endif |
49309057 ILT |
2355 | } |
2356 | else | |
2357 | { | |
2358 | if (sym->sy_frag != &zero_address_frag) | |
2359 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2360 | if (sym->written) | |
2361 | fprintf (file, " written"); | |
2362 | if (sym->sy_resolved) | |
2363 | fprintf (file, " resolved"); | |
2364 | else if (sym->sy_resolving) | |
2365 | fprintf (file, " resolving"); | |
2366 | if (sym->sy_used_in_reloc) | |
2367 | fprintf (file, " used-in-reloc"); | |
2368 | if (sym->sy_used) | |
2369 | fprintf (file, " used"); | |
2370 | if (S_IS_LOCAL (sym)) | |
2371 | fprintf (file, " local"); | |
2372 | if (S_IS_EXTERN (sym)) | |
2373 | fprintf (file, " extern"); | |
2374 | if (S_IS_DEBUG (sym)) | |
2375 | fprintf (file, " debug"); | |
2376 | if (S_IS_DEFINED (sym)) | |
2377 | fprintf (file, " defined"); | |
2378 | } | |
252b5132 | 2379 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2380 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2381 | { |
2382 | segT s = S_GET_SEGMENT (sym); | |
2383 | ||
2384 | if (s != undefined_section | |
2385 | && s != expr_section) | |
2386 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); | |
2387 | } | |
2388 | else if (indent_level < max_indent_level | |
2389 | && S_GET_SEGMENT (sym) != undefined_section) | |
2390 | { | |
2391 | indent_level++; | |
2392 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2393 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2394 | if (LOCAL_SYMBOL_CHECK (sym)) |
2395 | fprintf (file, "constant %lx", | |
bd780143 | 2396 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2397 | else |
a1605869 | 2398 | #endif |
49309057 | 2399 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2400 | fprintf (file, ">"); |
2401 | indent_level--; | |
2402 | } | |
2403 | fflush (file); | |
2404 | } | |
2405 | ||
2406 | void | |
2407 | print_symbol_value (sym) | |
2408 | symbolS *sym; | |
2409 | { | |
2410 | indent_level = 0; | |
2411 | print_symbol_value_1 (stderr, sym); | |
2412 | fprintf (stderr, "\n"); | |
2413 | } | |
2414 | ||
2415 | static void | |
2416 | print_binary (file, name, exp) | |
2417 | FILE *file; | |
7c743825 | 2418 | const char *name; |
252b5132 RH |
2419 | expressionS *exp; |
2420 | { | |
2421 | indent_level++; | |
2422 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2423 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2424 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2425 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2426 | fprintf (file, ">"); | |
2427 | indent_level--; | |
2428 | } | |
2429 | ||
2430 | void | |
2431 | print_expr_1 (file, exp) | |
2432 | FILE *file; | |
2433 | expressionS *exp; | |
2434 | { | |
2435 | fprintf (file, "expr %lx ", (long) exp); | |
2436 | switch (exp->X_op) | |
2437 | { | |
2438 | case O_illegal: | |
2439 | fprintf (file, "illegal"); | |
2440 | break; | |
2441 | case O_absent: | |
2442 | fprintf (file, "absent"); | |
2443 | break; | |
2444 | case O_constant: | |
2445 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2446 | break; | |
2447 | case O_symbol: | |
2448 | indent_level++; | |
2449 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2450 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2451 | fprintf (file, ">"); | |
2452 | maybe_print_addnum: | |
2453 | if (exp->X_add_number) | |
2454 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2455 | (long) exp->X_add_number); | |
2456 | indent_level--; | |
2457 | break; | |
2458 | case O_register: | |
2459 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2460 | break; | |
2461 | case O_big: | |
2462 | fprintf (file, "big"); | |
2463 | break; | |
2464 | case O_uminus: | |
2465 | fprintf (file, "uminus -<"); | |
2466 | indent_level++; | |
2467 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2468 | fprintf (file, ">"); | |
2469 | goto maybe_print_addnum; | |
2470 | case O_bit_not: | |
2471 | fprintf (file, "bit_not"); | |
2472 | break; | |
2473 | case O_multiply: | |
2474 | print_binary (file, "multiply", exp); | |
2475 | break; | |
2476 | case O_divide: | |
2477 | print_binary (file, "divide", exp); | |
2478 | break; | |
2479 | case O_modulus: | |
2480 | print_binary (file, "modulus", exp); | |
2481 | break; | |
2482 | case O_left_shift: | |
2483 | print_binary (file, "lshift", exp); | |
2484 | break; | |
2485 | case O_right_shift: | |
2486 | print_binary (file, "rshift", exp); | |
2487 | break; | |
2488 | case O_bit_inclusive_or: | |
2489 | print_binary (file, "bit_ior", exp); | |
2490 | break; | |
2491 | case O_bit_exclusive_or: | |
2492 | print_binary (file, "bit_xor", exp); | |
2493 | break; | |
2494 | case O_bit_and: | |
2495 | print_binary (file, "bit_and", exp); | |
2496 | break; | |
2497 | case O_eq: | |
2498 | print_binary (file, "eq", exp); | |
2499 | break; | |
2500 | case O_ne: | |
2501 | print_binary (file, "ne", exp); | |
2502 | break; | |
2503 | case O_lt: | |
2504 | print_binary (file, "lt", exp); | |
2505 | break; | |
2506 | case O_le: | |
2507 | print_binary (file, "le", exp); | |
2508 | break; | |
2509 | case O_ge: | |
2510 | print_binary (file, "ge", exp); | |
2511 | break; | |
2512 | case O_gt: | |
2513 | print_binary (file, "gt", exp); | |
2514 | break; | |
2515 | case O_logical_and: | |
2516 | print_binary (file, "logical_and", exp); | |
2517 | break; | |
2518 | case O_logical_or: | |
2519 | print_binary (file, "logical_or", exp); | |
2520 | break; | |
2521 | case O_add: | |
2522 | indent_level++; | |
2523 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2524 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2525 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2526 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2527 | fprintf (file, ">"); | |
2528 | goto maybe_print_addnum; | |
2529 | case O_subtract: | |
2530 | indent_level++; | |
2531 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2532 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2533 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2534 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2535 | fprintf (file, ">"); | |
2536 | goto maybe_print_addnum; | |
2537 | default: | |
2538 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2539 | break; | |
2540 | } | |
2541 | fflush (stdout); | |
2542 | } | |
2543 | ||
2544 | void | |
2545 | print_expr (exp) | |
2546 | expressionS *exp; | |
2547 | { | |
2548 | print_expr_1 (stderr, exp); | |
2549 | fprintf (stderr, "\n"); | |
2550 | } | |
2551 | ||
2552 | void | |
2553 | symbol_print_statistics (file) | |
2554 | FILE *file; | |
2555 | { | |
2556 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2557 | #ifdef BFD_ASSEMBLER |
2558 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2559 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2560 | local_symbol_count, local_symbol_conversion_count); | |
2561 | #endif | |
252b5132 | 2562 | } |