Commit | Line | Data |
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252b5132 | 1 | /* symbols.c -symbol table- |
f7e42eb4 | 2 | Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
9758f3fc | 3 | 1999, 2000, 2001, 2002 |
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 | 289 | |
9f269a72 NC |
290 | if (now_seg == absolute_section) |
291 | { | |
292 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
293 | return NULL; | |
294 | } | |
295 | ||
296 | /* Sun local labels go out of scope whenever a non-local symbol is | |
252b5132 RH |
297 | defined. */ |
298 | if (LOCAL_LABELS_DOLLAR) | |
299 | { | |
300 | int local; | |
301 | ||
302 | #ifdef BFD_ASSEMBLER | |
303 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
304 | #else | |
305 | local = LOCAL_LABEL (sym_name); | |
306 | #endif | |
307 | ||
308 | if (! local) | |
309 | dollar_label_clear (); | |
310 | } | |
311 | ||
312 | #ifndef WORKING_DOT_WORD | |
313 | if (new_broken_words) | |
314 | { | |
315 | struct broken_word *a; | |
316 | int possible_bytes; | |
317 | fragS *frag_tmp; | |
318 | char *frag_opcode; | |
319 | ||
320 | extern const int md_short_jump_size; | |
321 | extern const int md_long_jump_size; | |
322 | possible_bytes = (md_short_jump_size | |
323 | + new_broken_words * md_long_jump_size); | |
324 | ||
325 | frag_tmp = frag_now; | |
326 | frag_opcode = frag_var (rs_broken_word, | |
327 | possible_bytes, | |
328 | possible_bytes, | |
329 | (relax_substateT) 0, | |
330 | (symbolS *) broken_words, | |
331 | (offsetT) 0, | |
332 | NULL); | |
333 | ||
7c743825 KH |
334 | /* We want to store the pointer to where to insert the jump |
335 | table in the fr_opcode of the rs_broken_word frag. This | |
336 | requires a little hackery. */ | |
252b5132 RH |
337 | while (frag_tmp |
338 | && (frag_tmp->fr_type != rs_broken_word | |
339 | || frag_tmp->fr_opcode)) | |
340 | frag_tmp = frag_tmp->fr_next; | |
341 | know (frag_tmp); | |
342 | frag_tmp->fr_opcode = frag_opcode; | |
343 | new_broken_words = 0; | |
344 | ||
345 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
346 | a->dispfrag = frag_tmp; | |
347 | } | |
348 | #endif /* WORKING_DOT_WORD */ | |
349 | ||
350 | if ((symbolP = symbol_find (sym_name)) != 0) | |
351 | { | |
352 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
353 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
354 | return symbolP; | |
355 | #endif | |
7c743825 | 356 | /* Now check for undefined symbols. */ |
49309057 ILT |
357 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
358 | { | |
a1605869 | 359 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
360 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
361 | ||
362 | if (locsym->lsy_section != undefined_section | |
363 | && (local_symbol_get_frag (locsym) != frag_now | |
364 | || locsym->lsy_section != now_seg | |
bd780143 | 365 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 366 | { |
0e389e77 | 367 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
368 | return symbolP; |
369 | } | |
370 | ||
371 | locsym->lsy_section = now_seg; | |
372 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 373 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 374 | #endif |
49309057 ILT |
375 | } |
376 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
377 | { |
378 | if (S_GET_VALUE (symbolP) == 0) | |
379 | { | |
380 | symbolP->sy_frag = frag_now; | |
381 | #ifdef OBJ_VMS | |
7c743825 | 382 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
383 | #endif |
384 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
385 | S_SET_SEGMENT (symbolP, now_seg); | |
386 | #ifdef N_UNDF | |
387 | know (N_UNDF == 0); | |
7c743825 | 388 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
389 | |
390 | } | |
391 | else | |
392 | { | |
7c743825 KH |
393 | /* There are still several cases to check: |
394 | ||
395 | A .comm/.lcomm symbol being redefined as initialized | |
396 | data is OK | |
397 | ||
398 | A .comm/.lcomm symbol being redefined with a larger | |
399 | size is also OK | |
400 | ||
401 | This only used to be allowed on VMS gas, but Sun cc | |
402 | on the sparc also depends on it. */ | |
252b5132 RH |
403 | |
404 | if (((!S_IS_DEBUG (symbolP) | |
405 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
406 | && S_IS_EXTERNAL (symbolP)) | |
407 | || S_GET_SEGMENT (symbolP) == bss_section) | |
408 | && (now_seg == data_section | |
409 | || now_seg == S_GET_SEGMENT (symbolP))) | |
410 | { | |
7c743825 | 411 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
412 | if (now_seg != data_section) |
413 | { | |
7c743825 KH |
414 | /* New .comm for prev .comm symbol. |
415 | ||
416 | If the new size is larger we just change its | |
417 | value. If the new size is smaller, we ignore | |
418 | this symbol. */ | |
252b5132 RH |
419 | if (S_GET_VALUE (symbolP) |
420 | < ((unsigned) frag_now_fix ())) | |
421 | { | |
422 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
423 | } | |
424 | } | |
425 | else | |
426 | { | |
427 | /* It is a .comm/.lcomm being converted to initialized | |
428 | data. */ | |
429 | symbolP->sy_frag = frag_now; | |
430 | #ifdef OBJ_VMS | |
7c743825 | 431 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
432 | #endif |
433 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 434 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
435 | } |
436 | } | |
437 | else | |
438 | { | |
4c63da97 AM |
439 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
440 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
441 | static const char *od_buf = ""; | |
252b5132 | 442 | #else |
4c63da97 AM |
443 | char od_buf[100]; |
444 | od_buf[0] = '\0'; | |
445 | #ifdef BFD_ASSEMBLER | |
446 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
447 | #endif | |
d1a6c242 KH |
448 | sprintf (od_buf, "%d.%d.", |
449 | S_GET_OTHER (symbolP), | |
450 | S_GET_DESC (symbolP)); | |
4c63da97 | 451 | #endif |
0e389e77 | 452 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
453 | sym_name, |
454 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 455 | od_buf, |
252b5132 | 456 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 457 | } |
7c743825 | 458 | } /* if the undefined symbol has no value */ |
252b5132 RH |
459 | } |
460 | else | |
461 | { | |
7c743825 | 462 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
463 | if (!(frag_now == symbolP->sy_frag |
464 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
465 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 466 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 467 | } |
252b5132 RH |
468 | |
469 | } | |
49309057 ILT |
470 | #ifdef BFD_ASSEMBLER |
471 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
472 | { | |
473 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
474 | (valueT) frag_now_fix (), | |
475 | frag_now); | |
476 | } | |
477 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
478 | else |
479 | { | |
480 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
481 | frag_now); | |
482 | #ifdef OBJ_VMS | |
483 | S_SET_OTHER (symbolP, const_flag); | |
484 | #endif /* OBJ_VMS */ | |
485 | ||
486 | symbol_table_insert (symbolP); | |
d4887adc | 487 | } |
252b5132 RH |
488 | |
489 | if (mri_common_symbol != NULL) | |
490 | { | |
491 | /* This symbol is actually being defined within an MRI common | |
492 | section. This requires special handling. */ | |
49309057 ILT |
493 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
494 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
495 | symbolP->sy_value.X_op = O_symbol; |
496 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
497 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
498 | symbolP->sy_frag = &zero_address_frag; | |
499 | S_SET_SEGMENT (symbolP, expr_section); | |
500 | symbolP->sy_mri_common = 1; | |
501 | } | |
502 | ||
503 | #ifdef tc_frob_label | |
504 | tc_frob_label (symbolP); | |
505 | #endif | |
506 | #ifdef obj_frob_label | |
507 | obj_frob_label (symbolP); | |
508 | #endif | |
509 | ||
510 | return symbolP; | |
511 | } | |
512 | \f | |
7c743825 | 513 | /* Die if we can't insert the symbol. */ |
252b5132 | 514 | |
7c743825 | 515 | void |
252b5132 RH |
516 | symbol_table_insert (symbolP) |
517 | symbolS *symbolP; | |
518 | { | |
519 | register const char *error_string; | |
520 | ||
521 | know (symbolP); | |
522 | know (S_GET_NAME (symbolP)); | |
523 | ||
49309057 ILT |
524 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
525 | { | |
526 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
527 | (PTR) symbolP); | |
528 | if (error_string != NULL) | |
0e389e77 | 529 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
530 | S_GET_NAME (symbolP), error_string); |
531 | return; | |
532 | } | |
533 | ||
252b5132 RH |
534 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
535 | { | |
0e389e77 | 536 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 537 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
538 | } /* on error */ |
539 | } | |
252b5132 | 540 | \f |
7c743825 KH |
541 | /* If a symbol name does not exist, create it as undefined, and insert |
542 | it into the symbol table. Return a pointer to it. */ | |
543 | ||
252b5132 RH |
544 | symbolS * |
545 | symbol_find_or_make (name) | |
546 | const char *name; | |
547 | { | |
548 | register symbolS *symbolP; | |
549 | ||
550 | symbolP = symbol_find (name); | |
551 | ||
552 | if (symbolP == NULL) | |
553 | { | |
49309057 ILT |
554 | #ifdef BFD_ASSEMBLER |
555 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
556 | { | |
557 | symbolP = md_undefined_symbol ((char *) name); | |
558 | if (symbolP != NULL) | |
559 | return symbolP; | |
560 | ||
561 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
562 | (valueT) 0, | |
563 | &zero_address_frag); | |
564 | return symbolP; | |
565 | } | |
566 | #endif | |
567 | ||
252b5132 RH |
568 | symbolP = symbol_make (name); |
569 | ||
570 | symbol_table_insert (symbolP); | |
571 | } /* if symbol wasn't found */ | |
572 | ||
573 | return (symbolP); | |
7c743825 | 574 | } |
252b5132 RH |
575 | |
576 | symbolS * | |
577 | symbol_make (name) | |
9758f3fc | 578 | const char *name; |
252b5132 RH |
579 | { |
580 | symbolS *symbolP; | |
581 | ||
7c743825 | 582 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
583 | symbolP = md_undefined_symbol ((char *) name); |
584 | ||
585 | if (!symbolP) | |
586 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
587 | ||
588 | return (symbolP); | |
7c743825 | 589 | } |
252b5132 | 590 | |
7c743825 KH |
591 | /* Implement symbol table lookup. |
592 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
593 | Out: NULL if the name was not in the symbol table, else the address | |
594 | of a struct symbol associated with that name. */ | |
252b5132 RH |
595 | |
596 | symbolS * | |
597 | symbol_find (name) | |
9758f3fc | 598 | const char *name; |
252b5132 RH |
599 | { |
600 | #ifdef STRIP_UNDERSCORE | |
601 | return (symbol_find_base (name, 1)); | |
602 | #else /* STRIP_UNDERSCORE */ | |
603 | return (symbol_find_base (name, 0)); | |
604 | #endif /* STRIP_UNDERSCORE */ | |
7c743825 | 605 | } |
252b5132 | 606 | |
9758f3fc AM |
607 | symbolS * |
608 | symbol_find_exact (name) | |
609 | const char *name; | |
610 | { | |
611 | #ifdef BFD_ASSEMBLER | |
612 | { | |
613 | struct local_symbol *locsym; | |
614 | ||
615 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
616 | if (locsym != NULL) | |
617 | return (symbolS *) locsym; | |
618 | } | |
619 | #endif | |
620 | ||
621 | return ((symbolS *) hash_find (sy_hash, name)); | |
622 | } | |
623 | ||
252b5132 RH |
624 | symbolS * |
625 | symbol_find_base (name, strip_underscore) | |
9758f3fc | 626 | const char *name; |
252b5132 RH |
627 | int strip_underscore; |
628 | { | |
629 | if (strip_underscore && *name == '_') | |
630 | name++; | |
631 | ||
632 | #ifdef tc_canonicalize_symbol_name | |
633 | { | |
634 | char *copy; | |
03987ced | 635 | size_t len = strlen (name) + 1; |
252b5132 | 636 | |
03987ced RH |
637 | copy = (char *) alloca (len); |
638 | memcpy (copy, name, len); | |
252b5132 RH |
639 | name = tc_canonicalize_symbol_name (copy); |
640 | } | |
641 | #endif | |
642 | ||
643 | if (! symbols_case_sensitive) | |
644 | { | |
03987ced RH |
645 | char *copy; |
646 | const char *orig; | |
647 | unsigned char c; | |
648 | ||
649 | orig = name; | |
650 | name = copy = (char *) alloca (strlen (name) + 1); | |
651 | ||
652 | while ((c = *orig++) != '\0') | |
653 | { | |
3882b010 | 654 | *copy++ = TOUPPER (c); |
03987ced RH |
655 | } |
656 | *copy = '\0'; | |
252b5132 RH |
657 | } |
658 | ||
9758f3fc | 659 | return symbol_find_exact (name); |
252b5132 RH |
660 | } |
661 | ||
7c743825 KH |
662 | /* Once upon a time, symbols were kept in a singly linked list. At |
663 | least coff needs to be able to rearrange them from time to time, for | |
664 | which a doubly linked list is much more convenient. Loic did these | |
665 | as macros which seemed dangerous to me so they're now functions. | |
666 | xoxorich. */ | |
667 | ||
668 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 669 | |
7c743825 | 670 | void |
252b5132 RH |
671 | symbol_append (addme, target, rootPP, lastPP) |
672 | symbolS *addme; | |
673 | symbolS *target; | |
674 | symbolS **rootPP; | |
675 | symbolS **lastPP; | |
676 | { | |
49309057 ILT |
677 | if (LOCAL_SYMBOL_CHECK (addme)) |
678 | abort (); | |
679 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
680 | abort (); | |
681 | ||
252b5132 RH |
682 | if (target == NULL) |
683 | { | |
684 | know (*rootPP == NULL); | |
685 | know (*lastPP == NULL); | |
686 | addme->sy_next = NULL; | |
687 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
688 | addme->sy_previous = NULL; | |
689 | #endif | |
690 | *rootPP = addme; | |
691 | *lastPP = addme; | |
692 | return; | |
7c743825 | 693 | } /* if the list is empty */ |
252b5132 RH |
694 | |
695 | if (target->sy_next != NULL) | |
696 | { | |
697 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
698 | target->sy_next->sy_previous = addme; | |
699 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
700 | } | |
701 | else | |
702 | { | |
703 | know (*lastPP == target); | |
704 | *lastPP = addme; | |
7c743825 | 705 | } /* if we have a next */ |
252b5132 RH |
706 | |
707 | addme->sy_next = target->sy_next; | |
708 | target->sy_next = addme; | |
709 | ||
710 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
711 | addme->sy_previous = target; | |
712 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
713 | ||
714 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
715 | } | |
716 | ||
7c743825 KH |
717 | /* Set the chain pointers of SYMBOL to null. */ |
718 | ||
719 | void | |
252b5132 RH |
720 | symbol_clear_list_pointers (symbolP) |
721 | symbolS *symbolP; | |
722 | { | |
49309057 ILT |
723 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
724 | abort (); | |
252b5132 RH |
725 | symbolP->sy_next = NULL; |
726 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
727 | symbolP->sy_previous = NULL; | |
728 | #endif | |
729 | } | |
730 | ||
731 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
732 | /* Remove SYMBOLP from the list. */ |
733 | ||
734 | void | |
252b5132 RH |
735 | symbol_remove (symbolP, rootPP, lastPP) |
736 | symbolS *symbolP; | |
737 | symbolS **rootPP; | |
738 | symbolS **lastPP; | |
739 | { | |
49309057 ILT |
740 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
741 | abort (); | |
742 | ||
252b5132 RH |
743 | if (symbolP == *rootPP) |
744 | { | |
745 | *rootPP = symbolP->sy_next; | |
7c743825 | 746 | } /* if it was the root */ |
252b5132 RH |
747 | |
748 | if (symbolP == *lastPP) | |
749 | { | |
750 | *lastPP = symbolP->sy_previous; | |
7c743825 | 751 | } /* if it was the tail */ |
252b5132 RH |
752 | |
753 | if (symbolP->sy_next != NULL) | |
754 | { | |
755 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 756 | } /* if not last */ |
252b5132 RH |
757 | |
758 | if (symbolP->sy_previous != NULL) | |
759 | { | |
760 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 761 | } /* if not first */ |
252b5132 RH |
762 | |
763 | debug_verify_symchain (*rootPP, *lastPP); | |
764 | } | |
765 | ||
7c743825 KH |
766 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
767 | ||
768 | void | |
252b5132 RH |
769 | symbol_insert (addme, target, rootPP, lastPP) |
770 | symbolS *addme; | |
771 | symbolS *target; | |
772 | symbolS **rootPP; | |
ab9da554 | 773 | symbolS **lastPP ATTRIBUTE_UNUSED; |
252b5132 | 774 | { |
49309057 ILT |
775 | if (LOCAL_SYMBOL_CHECK (addme)) |
776 | abort (); | |
777 | if (LOCAL_SYMBOL_CHECK (target)) | |
778 | abort (); | |
779 | ||
252b5132 RH |
780 | if (target->sy_previous != NULL) |
781 | { | |
782 | target->sy_previous->sy_next = addme; | |
783 | } | |
784 | else | |
785 | { | |
786 | know (*rootPP == target); | |
787 | *rootPP = addme; | |
7c743825 | 788 | } /* if not first */ |
252b5132 RH |
789 | |
790 | addme->sy_previous = target->sy_previous; | |
791 | target->sy_previous = addme; | |
792 | addme->sy_next = target; | |
793 | ||
794 | debug_verify_symchain (*rootPP, *lastPP); | |
795 | } | |
796 | ||
797 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
798 | ||
7c743825 | 799 | void |
252b5132 RH |
800 | verify_symbol_chain (rootP, lastP) |
801 | symbolS *rootP; | |
802 | symbolS *lastP; | |
803 | { | |
804 | symbolS *symbolP = rootP; | |
805 | ||
806 | if (symbolP == NULL) | |
807 | return; | |
808 | ||
809 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
810 | { | |
49309057 ILT |
811 | #ifdef BFD_ASSEMBLER |
812 | assert (symbolP->bsym != NULL); | |
813 | #endif | |
252b5132 RH |
814 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
815 | assert (symbolP->sy_next->sy_previous == symbolP); | |
816 | #else | |
817 | /* Walk the list anyways, to make sure pointers are still good. */ | |
818 | ; | |
819 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
820 | } | |
821 | ||
822 | assert (lastP == symbolP); | |
823 | } | |
824 | ||
825 | void | |
826 | verify_symbol_chain_2 (sym) | |
827 | symbolS *sym; | |
828 | { | |
829 | symbolS *p = sym, *n = sym; | |
830 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
831 | while (symbol_previous (p)) | |
832 | p = symbol_previous (p); | |
833 | #endif | |
834 | while (symbol_next (n)) | |
835 | n = symbol_next (n); | |
836 | verify_symbol_chain (p, n); | |
837 | } | |
838 | ||
839 | /* Resolve the value of a symbol. This is called during the final | |
840 | pass over the symbol table to resolve any symbols with complex | |
841 | values. */ | |
842 | ||
843 | valueT | |
6386f3a7 | 844 | resolve_symbol_value (symp) |
252b5132 | 845 | symbolS *symp; |
252b5132 RH |
846 | { |
847 | int resolved; | |
03e83a45 | 848 | valueT final_val = 0; |
252b5132 RH |
849 | segT final_seg; |
850 | ||
a1605869 | 851 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
852 | if (LOCAL_SYMBOL_CHECK (symp)) |
853 | { | |
854 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
855 | ||
bd780143 | 856 | final_val = locsym->lsy_value; |
49309057 | 857 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 858 | return final_val; |
49309057 | 859 | |
bd780143 | 860 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 861 | |
6386f3a7 | 862 | if (finalize_syms) |
49309057 | 863 | { |
bd780143 | 864 | locsym->lsy_value = final_val; |
49309057 ILT |
865 | local_symbol_mark_resolved (locsym); |
866 | } | |
867 | ||
868 | return final_val; | |
869 | } | |
a1605869 | 870 | #endif |
49309057 | 871 | |
252b5132 RH |
872 | if (symp->sy_resolved) |
873 | { | |
874 | if (symp->sy_value.X_op == O_constant) | |
875 | return (valueT) symp->sy_value.X_add_number; | |
876 | else | |
877 | return 0; | |
878 | } | |
879 | ||
880 | resolved = 0; | |
881 | final_seg = S_GET_SEGMENT (symp); | |
882 | ||
883 | if (symp->sy_resolving) | |
884 | { | |
6386f3a7 | 885 | if (finalize_syms) |
0e389e77 | 886 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 887 | S_GET_NAME (symp)); |
252b5132 RH |
888 | final_val = 0; |
889 | resolved = 1; | |
890 | } | |
891 | else | |
892 | { | |
893 | symbolS *add_symbol, *op_symbol; | |
894 | offsetT left, right; | |
895 | segT seg_left, seg_right; | |
896 | operatorT op; | |
897 | ||
898 | symp->sy_resolving = 1; | |
899 | ||
900 | /* Help out with CSE. */ | |
901 | add_symbol = symp->sy_value.X_add_symbol; | |
902 | op_symbol = symp->sy_value.X_op_symbol; | |
903 | final_val = symp->sy_value.X_add_number; | |
904 | op = symp->sy_value.X_op; | |
905 | ||
906 | switch (op) | |
907 | { | |
908 | default: | |
909 | BAD_CASE (op); | |
910 | break; | |
911 | ||
912 | case O_absent: | |
913 | final_val = 0; | |
914 | /* Fall through. */ | |
915 | ||
916 | case O_constant: | |
bea9907b | 917 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
918 | if (final_seg == expr_section) |
919 | final_seg = absolute_section; | |
920 | resolved = 1; | |
921 | break; | |
922 | ||
923 | case O_symbol: | |
924 | case O_symbol_rva: | |
6386f3a7 | 925 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
926 | seg_left = S_GET_SEGMENT (add_symbol); |
927 | if (finalize_syms) | |
928 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 929 | |
e0890092 | 930 | do_symbol: |
252b5132 RH |
931 | if (symp->sy_mri_common) |
932 | { | |
933 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
934 | relocation routines are going to handle it specially. |
935 | Don't change the value. */ | |
49309057 | 936 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
937 | break; |
938 | } | |
939 | ||
6386f3a7 | 940 | if (finalize_syms && final_val == 0) |
49309057 ILT |
941 | { |
942 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
943 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
944 | add_symbol); | |
945 | copy_symbol_attributes (symp, add_symbol); | |
946 | } | |
252b5132 | 947 | |
e0890092 AM |
948 | /* If we have equated this symbol to an undefined or common |
949 | symbol, keep X_op set to O_symbol, and don't change | |
950 | X_add_number. This permits the routine which writes out | |
951 | relocation to detect this case, and convert the | |
952 | relocation to be against the symbol to which this symbol | |
953 | is equated. */ | |
252b5132 RH |
954 | if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol)) |
955 | { | |
6386f3a7 | 956 | if (finalize_syms) |
252b5132 | 957 | { |
252b5132 RH |
958 | symp->sy_value.X_op = O_symbol; |
959 | symp->sy_value.X_add_symbol = add_symbol; | |
960 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
961 | /* Use X_op_symbol as a flag. */ |
962 | symp->sy_value.X_op_symbol = add_symbol; | |
963 | final_seg = seg_left; | |
252b5132 RH |
964 | } |
965 | final_val = 0; | |
49309057 | 966 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 967 | symp->sy_resolving = 0; |
252b5132 RH |
968 | goto exit_dont_set_value; |
969 | } | |
e0890092 AM |
970 | else if (finalize_syms && final_seg == expr_section |
971 | && seg_left != expr_section) | |
972 | { | |
973 | /* If the symbol is an expression symbol, do similarly | |
974 | as for undefined and common syms above. Handles | |
975 | "sym +/- expr" where "expr" cannot be evaluated | |
976 | immediately, and we want relocations to be against | |
977 | "sym", eg. because it is weak. */ | |
978 | symp->sy_value.X_op = O_symbol; | |
979 | symp->sy_value.X_add_symbol = add_symbol; | |
980 | symp->sy_value.X_add_number = final_val; | |
981 | symp->sy_value.X_op_symbol = add_symbol; | |
982 | final_seg = seg_left; | |
983 | final_val += symp->sy_frag->fr_address + left; | |
984 | resolved = symbol_resolved_p (add_symbol); | |
985 | symp->sy_resolving = 0; | |
986 | goto exit_dont_set_value; | |
987 | } | |
252b5132 RH |
988 | else |
989 | { | |
990 | final_val += symp->sy_frag->fr_address + left; | |
991 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 992 | final_seg = seg_left; |
252b5132 RH |
993 | } |
994 | ||
49309057 | 995 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
996 | break; |
997 | ||
998 | case O_uminus: | |
999 | case O_bit_not: | |
1000 | case O_logical_not: | |
6386f3a7 | 1001 | left = resolve_symbol_value (add_symbol); |
784b640d | 1002 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 RH |
1003 | |
1004 | if (op == O_uminus) | |
1005 | left = -left; | |
1006 | else if (op == O_logical_not) | |
1007 | left = !left; | |
1008 | else | |
1009 | left = ~left; | |
1010 | ||
1011 | final_val += left + symp->sy_frag->fr_address; | |
1012 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d | 1013 | final_seg = seg_left; |
252b5132 | 1014 | |
49309057 | 1015 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1016 | break; |
1017 | ||
1018 | case O_multiply: | |
1019 | case O_divide: | |
1020 | case O_modulus: | |
1021 | case O_left_shift: | |
1022 | case O_right_shift: | |
1023 | case O_bit_inclusive_or: | |
1024 | case O_bit_or_not: | |
1025 | case O_bit_exclusive_or: | |
1026 | case O_bit_and: | |
1027 | case O_add: | |
1028 | case O_subtract: | |
1029 | case O_eq: | |
1030 | case O_ne: | |
1031 | case O_lt: | |
1032 | case O_le: | |
1033 | case O_ge: | |
1034 | case O_gt: | |
1035 | case O_logical_and: | |
1036 | case O_logical_or: | |
6386f3a7 AM |
1037 | left = resolve_symbol_value (add_symbol); |
1038 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1039 | seg_left = S_GET_SEGMENT (add_symbol); |
1040 | seg_right = S_GET_SEGMENT (op_symbol); | |
1041 | ||
1042 | /* Simplify addition or subtraction of a constant by folding the | |
1043 | constant into X_add_number. */ | |
e0890092 | 1044 | if (op == O_add) |
252b5132 RH |
1045 | { |
1046 | if (seg_right == absolute_section) | |
1047 | { | |
e0890092 | 1048 | final_val += right; |
252b5132 RH |
1049 | goto do_symbol; |
1050 | } | |
e0890092 | 1051 | else if (seg_left == absolute_section) |
252b5132 | 1052 | { |
252b5132 RH |
1053 | final_val += left; |
1054 | add_symbol = op_symbol; | |
1055 | left = right; | |
e0890092 AM |
1056 | seg_left = seg_right; |
1057 | goto do_symbol; | |
1058 | } | |
1059 | } | |
1060 | else if (op == O_subtract) | |
1061 | { | |
1062 | if (seg_right == absolute_section) | |
1063 | { | |
1064 | final_val -= right; | |
252b5132 RH |
1065 | goto do_symbol; |
1066 | } | |
1067 | } | |
1068 | ||
e0890092 AM |
1069 | /* Equality and non-equality tests are permitted on anything. |
1070 | Subtraction, and other comparison operators are permitted if | |
1071 | both operands are in the same section. Otherwise, both | |
1072 | operands must be absolute. We already handled the case of | |
1073 | addition or subtraction of a constant above. This will | |
1074 | probably need to be changed for an object file format which | |
1075 | supports arbitrary expressions, such as IEEE-695. | |
1076 | ||
1077 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1078 | otherwise we may get the same message multiple times. */ |
784b640d AM |
1079 | if ((op == O_eq || op == O_ne) |
1080 | || ((op == O_subtract | |
1081 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1082 | && seg_left == seg_right | |
1083 | && (seg_left != undefined_section | |
1084 | || add_symbol == op_symbol)) | |
1085 | || (seg_left == absolute_section | |
1086 | && seg_right == absolute_section)) | |
1087 | { | |
1088 | if (final_seg == expr_section || final_seg == undefined_section) | |
1089 | final_seg = absolute_section; | |
1090 | } | |
1091 | else if (finalize_syms) | |
252b5132 RH |
1092 | { |
1093 | char *file; | |
1094 | unsigned int line; | |
1095 | ||
1096 | if (expr_symbol_where (symp, &file, &line)) | |
1097 | { | |
1098 | if (seg_left == undefined_section) | |
1099 | as_bad_where (file, line, | |
0e389e77 | 1100 | _("undefined symbol `%s' in operation"), |
252b5132 RH |
1101 | S_GET_NAME (symp->sy_value.X_add_symbol)); |
1102 | if (seg_right == undefined_section) | |
1103 | as_bad_where (file, line, | |
0e389e77 | 1104 | _("undefined symbol `%s' in operation"), |
252b5132 RH |
1105 | S_GET_NAME (symp->sy_value.X_op_symbol)); |
1106 | if (seg_left != undefined_section | |
1107 | && seg_right != undefined_section) | |
7c743825 KH |
1108 | as_bad_where (file, line, |
1109 | _("invalid section for operation")); | |
252b5132 RH |
1110 | } |
1111 | else | |
1112 | { | |
1113 | if (seg_left == undefined_section) | |
0e389e77 | 1114 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), |
252b5132 RH |
1115 | S_GET_NAME (symp->sy_value.X_add_symbol), |
1116 | S_GET_NAME (symp)); | |
1117 | if (seg_right == undefined_section) | |
0e389e77 | 1118 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), |
252b5132 RH |
1119 | S_GET_NAME (symp->sy_value.X_op_symbol), |
1120 | S_GET_NAME (symp)); | |
1121 | if (seg_left != undefined_section | |
1122 | && seg_right != undefined_section) | |
0e389e77 | 1123 | as_bad (_("invalid section for operation setting `%s'"), |
252b5132 RH |
1124 | S_GET_NAME (symp)); |
1125 | } | |
784b640d AM |
1126 | /* Prevent the error propagating. */ |
1127 | if (final_seg == expr_section || final_seg == undefined_section) | |
1128 | final_seg = absolute_section; | |
252b5132 RH |
1129 | } |
1130 | ||
1131 | /* Check for division by zero. */ | |
1132 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1133 | { | |
1134 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1135 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1136 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1137 | { |
1138 | char *file; | |
1139 | unsigned int line; | |
1140 | ||
1141 | if (expr_symbol_where (symp, &file, &line)) | |
1142 | as_bad_where (file, line, _("division by zero")); | |
1143 | else | |
0e389e77 | 1144 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1145 | S_GET_NAME (symp)); |
1146 | } | |
1147 | ||
1148 | right = 1; | |
1149 | } | |
1150 | ||
1151 | switch (symp->sy_value.X_op) | |
1152 | { | |
1153 | case O_multiply: left *= right; break; | |
1154 | case O_divide: left /= right; break; | |
1155 | case O_modulus: left %= right; break; | |
1156 | case O_left_shift: left <<= right; break; | |
1157 | case O_right_shift: left >>= right; break; | |
1158 | case O_bit_inclusive_or: left |= right; break; | |
1159 | case O_bit_or_not: left |= ~right; break; | |
1160 | case O_bit_exclusive_or: left ^= right; break; | |
1161 | case O_bit_and: left &= right; break; | |
1162 | case O_add: left += right; break; | |
1163 | case O_subtract: left -= right; break; | |
e0890092 AM |
1164 | case O_eq: |
1165 | case O_ne: | |
1166 | left = (left == right && seg_left == seg_right | |
1167 | && (seg_left != undefined_section | |
1168 | || add_symbol == op_symbol) | |
1169 | ? ~ (offsetT) 0 : 0); | |
1170 | if (symp->sy_value.X_op == O_ne) | |
1171 | left = ~left; | |
1172 | break; | |
252b5132 RH |
1173 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1174 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1175 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1176 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1177 | case O_logical_and: left = left && right; break; | |
1178 | case O_logical_or: left = left || right; break; | |
1179 | default: abort (); | |
1180 | } | |
1181 | ||
1182 | final_val += symp->sy_frag->fr_address + left; | |
1183 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1184 | { |
1185 | if (seg_left == undefined_section | |
1186 | || seg_right == undefined_section) | |
1187 | final_seg = undefined_section; | |
1188 | else if (seg_left == absolute_section) | |
1189 | final_seg = seg_right; | |
1190 | else | |
1191 | final_seg = seg_left; | |
1192 | } | |
49309057 ILT |
1193 | resolved = (symbol_resolved_p (add_symbol) |
1194 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1195 | break; |
252b5132 RH |
1196 | |
1197 | case O_register: | |
1198 | case O_big: | |
1199 | case O_illegal: | |
1200 | /* Give an error (below) if not in expr_section. We don't | |
1201 | want to worry about expr_section symbols, because they | |
1202 | are fictional (they are created as part of expression | |
1203 | resolution), and any problems may not actually mean | |
1204 | anything. */ | |
1205 | break; | |
1206 | } | |
1207 | ||
1208 | symp->sy_resolving = 0; | |
1209 | } | |
1210 | ||
6386f3a7 | 1211 | if (finalize_syms) |
05bdb37e | 1212 | S_SET_VALUE (symp, final_val); |
252b5132 | 1213 | |
05bdb37e AM |
1214 | exit_dont_set_value: |
1215 | /* Always set the segment, even if not finalizing the value. | |
1216 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1217 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1218 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1219 | for a stab symbol, so we use this bad hack. */ | |
1220 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1221 | #endif |
05bdb37e | 1222 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1223 | |
252b5132 | 1224 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1225 | if (finalize_syms) |
252b5132 RH |
1226 | { |
1227 | if (resolved) | |
1228 | symp->sy_resolved = 1; | |
1229 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1230 | { | |
0e389e77 | 1231 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1232 | S_GET_NAME (symp)); |
252b5132 RH |
1233 | symp->sy_resolved = 1; |
1234 | } | |
1235 | } | |
1236 | ||
1237 | return final_val; | |
1238 | } | |
1239 | ||
49309057 ILT |
1240 | #ifdef BFD_ASSEMBLER |
1241 | ||
1242 | static void resolve_local_symbol PARAMS ((const char *, PTR)); | |
1243 | ||
1244 | /* A static function passed to hash_traverse. */ | |
1245 | ||
1246 | static void | |
1247 | resolve_local_symbol (key, value) | |
ab9da554 | 1248 | const char *key ATTRIBUTE_UNUSED; |
49309057 ILT |
1249 | PTR value; |
1250 | { | |
1251 | if (value != NULL) | |
6386f3a7 | 1252 | resolve_symbol_value (value); |
49309057 ILT |
1253 | } |
1254 | ||
1255 | #endif | |
1256 | ||
1257 | /* Resolve all local symbols. */ | |
1258 | ||
1259 | void | |
1260 | resolve_local_symbol_values () | |
1261 | { | |
1262 | #ifdef BFD_ASSEMBLER | |
1263 | hash_traverse (local_hash, resolve_local_symbol); | |
1264 | #endif | |
1265 | } | |
1266 | ||
252b5132 RH |
1267 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1268 | They are *really* local. That is, they go out of scope whenever we see a | |
1269 | label that isn't local. Also, like fb labels, there can be multiple | |
1270 | instances of a dollar label. Therefor, we name encode each instance with | |
1271 | the instance number, keep a list of defined symbols separate from the real | |
1272 | symbol table, and we treat these buggers as a sparse array. */ | |
1273 | ||
1274 | static long *dollar_labels; | |
1275 | static long *dollar_label_instances; | |
1276 | static char *dollar_label_defines; | |
1277 | static unsigned long dollar_label_count; | |
1278 | static unsigned long dollar_label_max; | |
1279 | ||
7c743825 | 1280 | int |
252b5132 RH |
1281 | dollar_label_defined (label) |
1282 | long label; | |
1283 | { | |
1284 | long *i; | |
1285 | ||
1286 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1287 | ||
1288 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1289 | if (*i == label) | |
1290 | return dollar_label_defines[i - dollar_labels]; | |
1291 | ||
7c743825 | 1292 | /* If we get here, label isn't defined. */ |
252b5132 | 1293 | return 0; |
7c743825 | 1294 | } |
252b5132 RH |
1295 | |
1296 | static long | |
1297 | dollar_label_instance (label) | |
1298 | long label; | |
1299 | { | |
1300 | long *i; | |
1301 | ||
1302 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1303 | ||
1304 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1305 | if (*i == label) | |
1306 | return (dollar_label_instances[i - dollar_labels]); | |
1307 | ||
7c743825 KH |
1308 | /* If we get here, we haven't seen the label before. |
1309 | Therefore its instance count is zero. */ | |
252b5132 RH |
1310 | return 0; |
1311 | } | |
1312 | ||
7c743825 | 1313 | void |
252b5132 RH |
1314 | dollar_label_clear () |
1315 | { | |
1316 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1317 | } | |
1318 | ||
1319 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1320 | ||
7c743825 | 1321 | void |
252b5132 RH |
1322 | define_dollar_label (label) |
1323 | long label; | |
1324 | { | |
1325 | long *i; | |
1326 | ||
1327 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1328 | if (*i == label) | |
1329 | { | |
1330 | ++dollar_label_instances[i - dollar_labels]; | |
1331 | dollar_label_defines[i - dollar_labels] = 1; | |
1332 | return; | |
1333 | } | |
1334 | ||
7c743825 | 1335 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1336 | |
1337 | if (dollar_labels == NULL) | |
1338 | { | |
1339 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1340 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1341 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1342 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1343 | dollar_label_count = 0; | |
1344 | } | |
1345 | else if (dollar_label_count == dollar_label_max) | |
1346 | { | |
1347 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1348 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1349 | dollar_label_max * sizeof (long)); | |
1350 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1351 | dollar_label_max * sizeof (long)); | |
1352 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1353 | } /* if we needed to grow */ |
252b5132 RH |
1354 | |
1355 | dollar_labels[dollar_label_count] = label; | |
1356 | dollar_label_instances[dollar_label_count] = 1; | |
1357 | dollar_label_defines[dollar_label_count] = 1; | |
1358 | ++dollar_label_count; | |
1359 | } | |
1360 | ||
7c743825 KH |
1361 | /* Caller must copy returned name: we re-use the area for the next name. |
1362 | ||
1363 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1364 | where n is the label number and m is the instance number. "L" makes | |
1365 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1366 | ordinary symbol SHOULD get the same name as a local label | |
1367 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1368 | ||
1369 | fb labels get the same treatment, except that ^B is used in place | |
1370 | of ^A. */ | |
1371 | ||
1372 | char * /* Return local label name. */ | |
252b5132 | 1373 | dollar_label_name (n, augend) |
7c743825 KH |
1374 | register long n; /* we just saw "n$:" : n a number. */ |
1375 | register int augend; /* 0 for current instance, 1 for new instance. */ | |
252b5132 RH |
1376 | { |
1377 | long i; | |
7c743825 | 1378 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1379 | static char symbol_name_build[24]; |
1380 | register char *p; | |
1381 | register char *q; | |
7c743825 | 1382 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1383 | |
1384 | know (n >= 0); | |
1385 | know (augend == 0 || augend == 1); | |
1386 | p = symbol_name_build; | |
f84dd1f0 NC |
1387 | #ifdef LOCAL_LABEL_PREFIX |
1388 | *p++ = LOCAL_LABEL_PREFIX; | |
1389 | #endif | |
252b5132 RH |
1390 | *p++ = 'L'; |
1391 | ||
7c743825 KH |
1392 | /* Next code just does sprintf( {}, "%d", n); */ |
1393 | /* Label number. */ | |
252b5132 RH |
1394 | q = symbol_name_temporary; |
1395 | for (*q++ = 0, i = n; i; ++q) | |
1396 | { | |
1397 | *q = i % 10 + '0'; | |
1398 | i /= 10; | |
1399 | } | |
1400 | while ((*p = *--q) != '\0') | |
1401 | ++p; | |
1402 | ||
aa257fcd | 1403 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1404 | |
7c743825 | 1405 | /* Instance number. */ |
252b5132 RH |
1406 | q = symbol_name_temporary; |
1407 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1408 | { | |
1409 | *q = i % 10 + '0'; | |
1410 | i /= 10; | |
1411 | } | |
1412 | while ((*p++ = *--q) != '\0');; | |
1413 | ||
7c743825 | 1414 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1415 | return symbol_name_build; |
1416 | } | |
1417 | ||
7c743825 KH |
1418 | /* Sombody else's idea of local labels. They are made by "n:" where n |
1419 | is any decimal digit. Refer to them with | |
1420 | "nb" for previous (backward) n: | |
1421 | or "nf" for next (forward) n:. | |
1422 | ||
1423 | We do a little better and let n be any number, not just a single digit, but | |
1424 | since the other guy's assembler only does ten, we treat the first ten | |
1425 | specially. | |
1426 | ||
1427 | Like someone else's assembler, we have one set of local label counters for | |
1428 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1429 | implies that one can refer to a label in another segment, and indeed some | |
1430 | crufty compilers have done just that. | |
1431 | ||
1432 | Since there could be a LOT of these things, treat them as a sparse | |
1433 | array. */ | |
252b5132 RH |
1434 | |
1435 | #define FB_LABEL_SPECIAL (10) | |
1436 | ||
1437 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1438 | static long *fb_labels; | |
1439 | static long *fb_label_instances; | |
1440 | static long fb_label_count; | |
1441 | static long fb_label_max; | |
1442 | ||
7c743825 | 1443 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1444 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1445 | ||
7c743825 | 1446 | static void |
252b5132 RH |
1447 | fb_label_init () |
1448 | { | |
1449 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1450 | } |
252b5132 | 1451 | |
7c743825 KH |
1452 | /* Add one to the instance number of this fb label. */ |
1453 | ||
1454 | void | |
252b5132 RH |
1455 | fb_label_instance_inc (label) |
1456 | long label; | |
1457 | { | |
1458 | long *i; | |
1459 | ||
1460 | if (label < FB_LABEL_SPECIAL) | |
1461 | { | |
1462 | ++fb_low_counter[label]; | |
1463 | return; | |
1464 | } | |
1465 | ||
1466 | if (fb_labels != NULL) | |
1467 | { | |
1468 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1469 | i < fb_labels + fb_label_count; ++i) | |
1470 | { | |
1471 | if (*i == label) | |
1472 | { | |
1473 | ++fb_label_instances[i - fb_labels]; | |
1474 | return; | |
7c743825 KH |
1475 | } /* if we find it */ |
1476 | } /* for each existing label */ | |
252b5132 RH |
1477 | } |
1478 | ||
7c743825 | 1479 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1480 | |
1481 | if (fb_labels == NULL) | |
1482 | { | |
1483 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1484 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1485 | fb_label_max = FB_LABEL_BUMP_BY; | |
1486 | fb_label_count = FB_LABEL_SPECIAL; | |
1487 | ||
1488 | } | |
1489 | else if (fb_label_count == fb_label_max) | |
1490 | { | |
1491 | fb_label_max += FB_LABEL_BUMP_BY; | |
1492 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1493 | fb_label_max * sizeof (long)); | |
1494 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1495 | fb_label_max * sizeof (long)); | |
7c743825 | 1496 | } /* if we needed to grow */ |
252b5132 RH |
1497 | |
1498 | fb_labels[fb_label_count] = label; | |
1499 | fb_label_instances[fb_label_count] = 1; | |
1500 | ++fb_label_count; | |
1501 | } | |
1502 | ||
7c743825 | 1503 | static long |
252b5132 RH |
1504 | fb_label_instance (label) |
1505 | long label; | |
1506 | { | |
1507 | long *i; | |
1508 | ||
1509 | if (label < FB_LABEL_SPECIAL) | |
1510 | { | |
1511 | return (fb_low_counter[label]); | |
1512 | } | |
1513 | ||
1514 | if (fb_labels != NULL) | |
1515 | { | |
1516 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1517 | i < fb_labels + fb_label_count; ++i) | |
1518 | { | |
1519 | if (*i == label) | |
1520 | { | |
1521 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1522 | } /* if we find it */ |
1523 | } /* for each existing label */ | |
252b5132 RH |
1524 | } |
1525 | ||
1526 | /* We didn't find the label, so this must be a reference to the | |
1527 | first instance. */ | |
1528 | return 0; | |
1529 | } | |
1530 | ||
7c743825 KH |
1531 | /* Caller must copy returned name: we re-use the area for the next name. |
1532 | ||
1533 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1534 | where n is the label number and m is the instance number. "L" makes | |
1535 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1536 | ordinary symbol SHOULD get the same name as a local label | |
1537 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1538 | ||
1539 | dollar labels get the same treatment, except that ^A is used in | |
1540 | place of ^B. */ | |
1541 | ||
1542 | char * /* Return local label name. */ | |
252b5132 | 1543 | fb_label_name (n, augend) |
7c743825 KH |
1544 | long n; /* We just saw "n:", "nf" or "nb" : n a number. */ |
1545 | long augend; /* 0 for nb, 1 for n:, nf. */ | |
252b5132 RH |
1546 | { |
1547 | long i; | |
7c743825 | 1548 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1549 | static char symbol_name_build[24]; |
1550 | register char *p; | |
1551 | register char *q; | |
7c743825 | 1552 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1553 | |
1554 | know (n >= 0); | |
1555 | know (augend == 0 || augend == 1); | |
1556 | p = symbol_name_build; | |
aa257fcd NC |
1557 | #ifdef LOCAL_LABEL_PREFIX |
1558 | *p++ = LOCAL_LABEL_PREFIX; | |
1559 | #endif | |
252b5132 RH |
1560 | *p++ = 'L'; |
1561 | ||
7c743825 KH |
1562 | /* Next code just does sprintf( {}, "%d", n); */ |
1563 | /* Label number. */ | |
252b5132 RH |
1564 | q = symbol_name_temporary; |
1565 | for (*q++ = 0, i = n; i; ++q) | |
1566 | { | |
1567 | *q = i % 10 + '0'; | |
1568 | i /= 10; | |
1569 | } | |
1570 | while ((*p = *--q) != '\0') | |
1571 | ++p; | |
1572 | ||
aa257fcd | 1573 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1574 | |
7c743825 | 1575 | /* Instance number. */ |
252b5132 RH |
1576 | q = symbol_name_temporary; |
1577 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1578 | { | |
1579 | *q = i % 10 + '0'; | |
1580 | i /= 10; | |
1581 | } | |
1582 | while ((*p++ = *--q) != '\0');; | |
1583 | ||
7c743825 | 1584 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1585 | return (symbol_name_build); |
7c743825 | 1586 | } |
252b5132 | 1587 | |
7c743825 KH |
1588 | /* Decode name that may have been generated by foo_label_name() above. |
1589 | If the name wasn't generated by foo_label_name(), then return it | |
1590 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1591 | |
1592 | char * | |
1593 | decode_local_label_name (s) | |
1594 | char *s; | |
1595 | { | |
1596 | char *p; | |
1597 | char *symbol_decode; | |
1598 | int label_number; | |
1599 | int instance_number; | |
1600 | char *type; | |
d95767bf | 1601 | const char *message_format; |
aa257fcd | 1602 | int index = 0; |
43ad3147 | 1603 | |
aa257fcd NC |
1604 | #ifdef LOCAL_LABEL_PREFIX |
1605 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1606 | ++index; | |
1607 | #endif | |
43ad3147 | 1608 | |
aa257fcd | 1609 | if (s[index] != 'L') |
252b5132 RH |
1610 | return s; |
1611 | ||
3882b010 | 1612 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1613 | label_number = (10 * label_number) + *p - '0'; |
1614 | ||
aa257fcd | 1615 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1616 | type = "dollar"; |
aa257fcd | 1617 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1618 | type = "fb"; |
1619 | else | |
1620 | return s; | |
1621 | ||
3882b010 | 1622 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1623 | instance_number = (10 * instance_number) + *p - '0'; |
1624 | ||
d95767bf | 1625 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1626 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1627 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1628 | ||
1629 | return symbol_decode; | |
1630 | } | |
1631 | ||
1632 | /* Get the value of a symbol. */ | |
1633 | ||
1634 | valueT | |
1635 | S_GET_VALUE (s) | |
1636 | symbolS *s; | |
1637 | { | |
a1605869 | 1638 | #ifdef BFD_ASSEMBLER |
49309057 | 1639 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1640 | return resolve_symbol_value (s); |
a1605869 | 1641 | #endif |
49309057 | 1642 | |
ac62c346 | 1643 | if (!s->sy_resolved) |
e46d99eb | 1644 | { |
6386f3a7 AM |
1645 | valueT val = resolve_symbol_value (s); |
1646 | if (!finalize_syms) | |
e46d99eb AM |
1647 | return val; |
1648 | } | |
252b5132 RH |
1649 | if (s->sy_value.X_op != O_constant) |
1650 | { | |
1651 | static symbolS *recur; | |
1652 | ||
1653 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1654 | may call S_GET_VALUE. We use a static symbol to avoid the | |
1655 | immediate recursion. */ | |
1656 | if (recur == s) | |
1657 | return (valueT) s->sy_value.X_add_number; | |
1658 | recur = s; | |
1659 | if (! s->sy_resolved | |
1660 | || s->sy_value.X_op != O_symbol | |
1661 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1662 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1663 | S_GET_NAME (s)); |
1664 | recur = NULL; | |
1665 | } | |
1666 | return (valueT) s->sy_value.X_add_number; | |
1667 | } | |
1668 | ||
1669 | /* Set the value of a symbol. */ | |
1670 | ||
1671 | void | |
1672 | S_SET_VALUE (s, val) | |
1673 | symbolS *s; | |
1674 | valueT val; | |
1675 | { | |
a1605869 | 1676 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1677 | if (LOCAL_SYMBOL_CHECK (s)) |
1678 | { | |
bd780143 | 1679 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1680 | return; |
1681 | } | |
a1605869 | 1682 | #endif |
49309057 | 1683 | |
252b5132 RH |
1684 | s->sy_value.X_op = O_constant; |
1685 | s->sy_value.X_add_number = (offsetT) val; | |
1686 | s->sy_value.X_unsigned = 0; | |
1687 | } | |
1688 | ||
1689 | void | |
1690 | copy_symbol_attributes (dest, src) | |
1691 | symbolS *dest, *src; | |
1692 | { | |
49309057 | 1693 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1694 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1695 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1696 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1697 | |
252b5132 RH |
1698 | #ifdef BFD_ASSEMBLER |
1699 | /* In an expression, transfer the settings of these flags. | |
1700 | The user can override later, of course. */ | |
1701 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1702 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1703 | #endif | |
1704 | ||
1705 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1706 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1707 | #endif | |
1708 | } | |
1709 | ||
1710 | #ifdef BFD_ASSEMBLER | |
1711 | ||
1712 | int | |
1713 | S_IS_FUNCTION (s) | |
1714 | symbolS *s; | |
1715 | { | |
49309057 ILT |
1716 | flagword flags; |
1717 | ||
1718 | if (LOCAL_SYMBOL_CHECK (s)) | |
1719 | return 0; | |
1720 | ||
1721 | flags = s->bsym->flags; | |
252b5132 RH |
1722 | |
1723 | return (flags & BSF_FUNCTION) != 0; | |
1724 | } | |
1725 | ||
1726 | int | |
1727 | S_IS_EXTERNAL (s) | |
1728 | symbolS *s; | |
1729 | { | |
49309057 ILT |
1730 | flagword flags; |
1731 | ||
1732 | if (LOCAL_SYMBOL_CHECK (s)) | |
1733 | return 0; | |
1734 | ||
1735 | flags = s->bsym->flags; | |
252b5132 | 1736 | |
7c743825 | 1737 | /* Sanity check. */ |
252b5132 RH |
1738 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1739 | abort (); | |
1740 | ||
1741 | return (flags & BSF_GLOBAL) != 0; | |
1742 | } | |
1743 | ||
1744 | int | |
1745 | S_IS_WEAK (s) | |
1746 | symbolS *s; | |
1747 | { | |
49309057 ILT |
1748 | if (LOCAL_SYMBOL_CHECK (s)) |
1749 | return 0; | |
252b5132 RH |
1750 | return (s->bsym->flags & BSF_WEAK) != 0; |
1751 | } | |
1752 | ||
1753 | int | |
1754 | S_IS_COMMON (s) | |
1755 | symbolS *s; | |
1756 | { | |
49309057 ILT |
1757 | if (LOCAL_SYMBOL_CHECK (s)) |
1758 | return 0; | |
252b5132 RH |
1759 | return bfd_is_com_section (s->bsym->section); |
1760 | } | |
1761 | ||
1762 | int | |
1763 | S_IS_DEFINED (s) | |
1764 | symbolS *s; | |
1765 | { | |
49309057 ILT |
1766 | if (LOCAL_SYMBOL_CHECK (s)) |
1767 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1768 | return s->bsym->section != undefined_section; |
1769 | } | |
1770 | ||
a161fe53 AM |
1771 | |
1772 | #ifndef EXTERN_FORCE_RELOC | |
1773 | #define EXTERN_FORCE_RELOC IS_ELF | |
1774 | #endif | |
1775 | ||
1776 | /* Return true for symbols that should not be reduced to section | |
1777 | symbols or eliminated from expressions, because they may be | |
1778 | overridden by the linker. */ | |
1779 | int | |
1780 | S_FORCE_RELOC (s) | |
1781 | symbolS *s; | |
1782 | { | |
1783 | if (LOCAL_SYMBOL_CHECK (s)) | |
1784 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
1785 | ||
1786 | return ((s->bsym->flags & BSF_WEAK) != 0 | |
1787 | || (EXTERN_FORCE_RELOC | |
1788 | && (s->bsym->flags & BSF_GLOBAL) != 0) | |
1789 | || s->bsym->section == undefined_section | |
1790 | || bfd_is_com_section (s->bsym->section)); | |
1791 | } | |
1792 | ||
252b5132 RH |
1793 | int |
1794 | S_IS_DEBUG (s) | |
1795 | symbolS *s; | |
1796 | { | |
49309057 ILT |
1797 | if (LOCAL_SYMBOL_CHECK (s)) |
1798 | return 0; | |
252b5132 RH |
1799 | if (s->bsym->flags & BSF_DEBUGGING) |
1800 | return 1; | |
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | int | |
1805 | S_IS_LOCAL (s) | |
1806 | symbolS *s; | |
1807 | { | |
49309057 | 1808 | flagword flags; |
252b5132 RH |
1809 | const char *name; |
1810 | ||
49309057 ILT |
1811 | if (LOCAL_SYMBOL_CHECK (s)) |
1812 | return 1; | |
1813 | ||
1814 | flags = s->bsym->flags; | |
1815 | ||
7c743825 | 1816 | /* Sanity check. */ |
252b5132 RH |
1817 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1818 | abort (); | |
1819 | ||
1820 | if (bfd_get_section (s->bsym) == reg_section) | |
1821 | return 1; | |
1822 | ||
1823 | if (flag_strip_local_absolute | |
1824 | && (flags & BSF_GLOBAL) == 0 | |
1825 | && bfd_get_section (s->bsym) == absolute_section) | |
1826 | return 1; | |
1827 | ||
1828 | name = S_GET_NAME (s); | |
1829 | return (name != NULL | |
1830 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1831 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1832 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1833 | || (! flag_keep_locals |
1834 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1835 | || (flag_mri | |
1836 | && name[0] == '?' | |
1837 | && name[1] == '?'))))); | |
1838 | } | |
1839 | ||
1840 | int | |
1841 | S_IS_EXTERN (s) | |
1842 | symbolS *s; | |
1843 | { | |
1844 | return S_IS_EXTERNAL (s); | |
1845 | } | |
1846 | ||
1847 | int | |
1848 | S_IS_STABD (s) | |
1849 | symbolS *s; | |
1850 | { | |
1851 | return S_GET_NAME (s) == 0; | |
1852 | } | |
1853 | ||
9758f3fc | 1854 | const char * |
252b5132 RH |
1855 | S_GET_NAME (s) |
1856 | symbolS *s; | |
1857 | { | |
49309057 ILT |
1858 | if (LOCAL_SYMBOL_CHECK (s)) |
1859 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1860 | return s->bsym->name; |
1861 | } | |
1862 | ||
1863 | segT | |
1864 | S_GET_SEGMENT (s) | |
1865 | symbolS *s; | |
1866 | { | |
49309057 ILT |
1867 | if (LOCAL_SYMBOL_CHECK (s)) |
1868 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1869 | return s->bsym->section; |
1870 | } | |
1871 | ||
1872 | void | |
1873 | S_SET_SEGMENT (s, seg) | |
1874 | symbolS *s; | |
1875 | segT seg; | |
1876 | { | |
1877 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1878 | faults assigning back to const global symbols such as *ABS*, but it | |
1879 | shouldn't happen anyway. */ | |
1880 | ||
49309057 ILT |
1881 | if (LOCAL_SYMBOL_CHECK (s)) |
1882 | { | |
1883 | if (seg == reg_section) | |
1884 | s = local_symbol_convert ((struct local_symbol *) s); | |
1885 | else | |
1886 | { | |
1887 | ((struct local_symbol *) s)->lsy_section = seg; | |
1888 | return; | |
1889 | } | |
1890 | } | |
1891 | ||
252b5132 RH |
1892 | if (s->bsym->flags & BSF_SECTION_SYM) |
1893 | { | |
1894 | if (s->bsym->section != seg) | |
7c743825 | 1895 | abort (); |
252b5132 RH |
1896 | } |
1897 | else | |
1898 | s->bsym->section = seg; | |
1899 | } | |
1900 | ||
1901 | void | |
1902 | S_SET_EXTERNAL (s) | |
1903 | symbolS *s; | |
1904 | { | |
49309057 ILT |
1905 | if (LOCAL_SYMBOL_CHECK (s)) |
1906 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1907 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1908 | { | |
1909 | /* Let .weak override .global. */ | |
1910 | return; | |
1911 | } | |
4d7c34bf NC |
1912 | if (s->bsym->flags & BSF_SECTION_SYM) |
1913 | { | |
1914 | char * file; | |
1915 | unsigned int line; | |
d1a6c242 | 1916 | |
4d7c34bf NC |
1917 | /* Do not reassign section symbols. */ |
1918 | as_where (& file, & line); | |
1919 | as_warn_where (file, line, | |
0e389e77 | 1920 | _("section symbols are already global")); |
4d7c34bf NC |
1921 | return; |
1922 | } | |
252b5132 | 1923 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1924 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
252b5132 RH |
1925 | } |
1926 | ||
1927 | void | |
1928 | S_CLEAR_EXTERNAL (s) | |
1929 | symbolS *s; | |
1930 | { | |
49309057 ILT |
1931 | if (LOCAL_SYMBOL_CHECK (s)) |
1932 | return; | |
252b5132 RH |
1933 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1934 | { | |
1935 | /* Let .weak override. */ | |
1936 | return; | |
1937 | } | |
1938 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1939 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1940 | } |
1941 | ||
1942 | void | |
1943 | S_SET_WEAK (s) | |
1944 | symbolS *s; | |
1945 | { | |
49309057 ILT |
1946 | if (LOCAL_SYMBOL_CHECK (s)) |
1947 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1948 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1949 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1950 | } |
1951 | ||
1952 | void | |
1953 | S_SET_NAME (s, name) | |
1954 | symbolS *s; | |
1955 | char *name; | |
1956 | { | |
49309057 ILT |
1957 | if (LOCAL_SYMBOL_CHECK (s)) |
1958 | { | |
1959 | ((struct local_symbol *) s)->lsy_name = name; | |
1960 | return; | |
1961 | } | |
252b5132 RH |
1962 | s->bsym->name = name; |
1963 | } | |
1964 | #endif /* BFD_ASSEMBLER */ | |
1965 | ||
49309057 ILT |
1966 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
1967 | ||
1968 | /* Return the previous symbol in a chain. */ | |
1969 | ||
1970 | symbolS * | |
1971 | symbol_previous (s) | |
1972 | symbolS *s; | |
1973 | { | |
1974 | if (LOCAL_SYMBOL_CHECK (s)) | |
1975 | abort (); | |
1976 | return s->sy_previous; | |
1977 | } | |
1978 | ||
1979 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
1980 | ||
1981 | /* Return the next symbol in a chain. */ | |
1982 | ||
1983 | symbolS * | |
1984 | symbol_next (s) | |
1985 | symbolS *s; | |
1986 | { | |
1987 | if (LOCAL_SYMBOL_CHECK (s)) | |
1988 | abort (); | |
1989 | return s->sy_next; | |
1990 | } | |
1991 | ||
1992 | /* Return a pointer to the value of a symbol as an expression. */ | |
1993 | ||
1994 | expressionS * | |
1995 | symbol_get_value_expression (s) | |
1996 | symbolS *s; | |
1997 | { | |
1998 | if (LOCAL_SYMBOL_CHECK (s)) | |
1999 | s = local_symbol_convert ((struct local_symbol *) s); | |
2000 | return &s->sy_value; | |
2001 | } | |
2002 | ||
2003 | /* Set the value of a symbol to an expression. */ | |
2004 | ||
2005 | void | |
2006 | symbol_set_value_expression (s, exp) | |
2007 | symbolS *s; | |
2008 | const expressionS *exp; | |
2009 | { | |
2010 | if (LOCAL_SYMBOL_CHECK (s)) | |
2011 | s = local_symbol_convert ((struct local_symbol *) s); | |
2012 | s->sy_value = *exp; | |
2013 | } | |
2014 | ||
2015 | /* Set the frag of a symbol. */ | |
2016 | ||
2017 | void | |
2018 | symbol_set_frag (s, f) | |
2019 | symbolS *s; | |
2020 | fragS *f; | |
2021 | { | |
a1605869 | 2022 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2023 | if (LOCAL_SYMBOL_CHECK (s)) |
2024 | { | |
2025 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2026 | return; | |
2027 | } | |
a1605869 | 2028 | #endif |
49309057 ILT |
2029 | s->sy_frag = f; |
2030 | } | |
2031 | ||
2032 | /* Return the frag of a symbol. */ | |
2033 | ||
2034 | fragS * | |
2035 | symbol_get_frag (s) | |
2036 | symbolS *s; | |
2037 | { | |
a1605869 | 2038 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2039 | if (LOCAL_SYMBOL_CHECK (s)) |
2040 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 2041 | #endif |
49309057 ILT |
2042 | return s->sy_frag; |
2043 | } | |
2044 | ||
2045 | /* Mark a symbol as having been used. */ | |
2046 | ||
2047 | void | |
2048 | symbol_mark_used (s) | |
2049 | symbolS *s; | |
2050 | { | |
2051 | if (LOCAL_SYMBOL_CHECK (s)) | |
2052 | return; | |
2053 | s->sy_used = 1; | |
2054 | } | |
2055 | ||
2056 | /* Clear the mark of whether a symbol has been used. */ | |
2057 | ||
2058 | void | |
2059 | symbol_clear_used (s) | |
2060 | symbolS *s; | |
2061 | { | |
2062 | if (LOCAL_SYMBOL_CHECK (s)) | |
2063 | s = local_symbol_convert ((struct local_symbol *) s); | |
2064 | s->sy_used = 0; | |
2065 | } | |
2066 | ||
2067 | /* Return whether a symbol has been used. */ | |
2068 | ||
2069 | int | |
2070 | symbol_used_p (s) | |
2071 | symbolS *s; | |
2072 | { | |
2073 | if (LOCAL_SYMBOL_CHECK (s)) | |
2074 | return 1; | |
2075 | return s->sy_used; | |
2076 | } | |
2077 | ||
2078 | /* Mark a symbol as having been used in a reloc. */ | |
2079 | ||
2080 | void | |
2081 | symbol_mark_used_in_reloc (s) | |
2082 | symbolS *s; | |
2083 | { | |
2084 | if (LOCAL_SYMBOL_CHECK (s)) | |
2085 | s = local_symbol_convert ((struct local_symbol *) s); | |
2086 | s->sy_used_in_reloc = 1; | |
2087 | } | |
2088 | ||
2089 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2090 | ||
2091 | void | |
2092 | symbol_clear_used_in_reloc (s) | |
2093 | symbolS *s; | |
2094 | { | |
2095 | if (LOCAL_SYMBOL_CHECK (s)) | |
2096 | return; | |
2097 | s->sy_used_in_reloc = 0; | |
2098 | } | |
2099 | ||
2100 | /* Return whether a symbol has been used in a reloc. */ | |
2101 | ||
2102 | int | |
2103 | symbol_used_in_reloc_p (s) | |
2104 | symbolS *s; | |
2105 | { | |
2106 | if (LOCAL_SYMBOL_CHECK (s)) | |
2107 | return 0; | |
2108 | return s->sy_used_in_reloc; | |
2109 | } | |
2110 | ||
2111 | /* Mark a symbol as an MRI common symbol. */ | |
2112 | ||
2113 | void | |
2114 | symbol_mark_mri_common (s) | |
2115 | symbolS *s; | |
2116 | { | |
2117 | if (LOCAL_SYMBOL_CHECK (s)) | |
2118 | s = local_symbol_convert ((struct local_symbol *) s); | |
2119 | s->sy_mri_common = 1; | |
2120 | } | |
2121 | ||
2122 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2123 | ||
2124 | void | |
2125 | symbol_clear_mri_common (s) | |
2126 | symbolS *s; | |
2127 | { | |
2128 | if (LOCAL_SYMBOL_CHECK (s)) | |
2129 | return; | |
2130 | s->sy_mri_common = 0; | |
2131 | } | |
2132 | ||
2133 | /* Return whether a symbol is an MRI common symbol. */ | |
2134 | ||
2135 | int | |
2136 | symbol_mri_common_p (s) | |
2137 | symbolS *s; | |
2138 | { | |
2139 | if (LOCAL_SYMBOL_CHECK (s)) | |
2140 | return 0; | |
2141 | return s->sy_mri_common; | |
2142 | } | |
2143 | ||
2144 | /* Mark a symbol as having been written. */ | |
2145 | ||
2146 | void | |
2147 | symbol_mark_written (s) | |
2148 | symbolS *s; | |
2149 | { | |
2150 | if (LOCAL_SYMBOL_CHECK (s)) | |
2151 | return; | |
2152 | s->written = 1; | |
2153 | } | |
2154 | ||
2155 | /* Clear the mark of whether a symbol has been written. */ | |
2156 | ||
2157 | void | |
2158 | symbol_clear_written (s) | |
2159 | symbolS *s; | |
2160 | { | |
2161 | if (LOCAL_SYMBOL_CHECK (s)) | |
2162 | return; | |
2163 | s->written = 0; | |
2164 | } | |
2165 | ||
2166 | /* Return whether a symbol has been written. */ | |
2167 | ||
2168 | int | |
2169 | symbol_written_p (s) | |
2170 | symbolS *s; | |
2171 | { | |
2172 | if (LOCAL_SYMBOL_CHECK (s)) | |
2173 | return 0; | |
2174 | return s->written; | |
2175 | } | |
2176 | ||
2177 | /* Mark a symbol has having been resolved. */ | |
2178 | ||
2179 | void | |
2180 | symbol_mark_resolved (s) | |
2181 | symbolS *s; | |
2182 | { | |
a1605869 | 2183 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2184 | if (LOCAL_SYMBOL_CHECK (s)) |
2185 | { | |
2186 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2187 | return; | |
2188 | } | |
a1605869 | 2189 | #endif |
49309057 ILT |
2190 | s->sy_resolved = 1; |
2191 | } | |
2192 | ||
2193 | /* Return whether a symbol has been resolved. */ | |
2194 | ||
2195 | int | |
2196 | symbol_resolved_p (s) | |
2197 | symbolS *s; | |
2198 | { | |
a1605869 | 2199 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2200 | if (LOCAL_SYMBOL_CHECK (s)) |
2201 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2202 | #endif |
49309057 ILT |
2203 | return s->sy_resolved; |
2204 | } | |
2205 | ||
2206 | /* Return whether a symbol is a section symbol. */ | |
2207 | ||
2208 | int | |
2209 | symbol_section_p (s) | |
a04b544b | 2210 | symbolS *s ATTRIBUTE_UNUSED; |
49309057 ILT |
2211 | { |
2212 | if (LOCAL_SYMBOL_CHECK (s)) | |
2213 | return 0; | |
2214 | #ifdef BFD_ASSEMBLER | |
2215 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2216 | #else | |
7c743825 | 2217 | /* FIXME. */ |
49309057 ILT |
2218 | return 0; |
2219 | #endif | |
2220 | } | |
2221 | ||
2222 | /* Return whether a symbol is equated to another symbol. */ | |
2223 | ||
2224 | int | |
2225 | symbol_equated_p (s) | |
2226 | symbolS *s; | |
2227 | { | |
2228 | if (LOCAL_SYMBOL_CHECK (s)) | |
2229 | return 0; | |
2230 | return s->sy_value.X_op == O_symbol; | |
2231 | } | |
2232 | ||
e0890092 AM |
2233 | /* Return whether a symbol is equated to another symbol, and should be |
2234 | treated specially when writing out relocs. */ | |
2235 | ||
2236 | int | |
2237 | symbol_equated_reloc_p (s) | |
2238 | symbolS *s; | |
2239 | { | |
2240 | if (LOCAL_SYMBOL_CHECK (s)) | |
2241 | return 0; | |
2242 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2243 | resolve_symbol_value to flag expression syms that have been | |
2244 | equated. */ | |
2245 | return (s->sy_value.X_op == O_symbol | |
2246 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) | |
2247 | || ! S_IS_DEFINED (s) | |
2248 | || S_IS_COMMON (s))); | |
2249 | } | |
2250 | ||
49309057 ILT |
2251 | /* Return whether a symbol has a constant value. */ |
2252 | ||
2253 | int | |
2254 | symbol_constant_p (s) | |
2255 | symbolS *s; | |
2256 | { | |
2257 | if (LOCAL_SYMBOL_CHECK (s)) | |
2258 | return 1; | |
2259 | return s->sy_value.X_op == O_constant; | |
2260 | } | |
2261 | ||
2262 | #ifdef BFD_ASSEMBLER | |
2263 | ||
2264 | /* Return the BFD symbol for a symbol. */ | |
2265 | ||
2266 | asymbol * | |
2267 | symbol_get_bfdsym (s) | |
2268 | symbolS *s; | |
2269 | { | |
2270 | if (LOCAL_SYMBOL_CHECK (s)) | |
2271 | s = local_symbol_convert ((struct local_symbol *) s); | |
2272 | return s->bsym; | |
2273 | } | |
2274 | ||
2275 | /* Set the BFD symbol for a symbol. */ | |
2276 | ||
2277 | void | |
2278 | symbol_set_bfdsym (s, bsym) | |
2279 | symbolS *s; | |
2280 | asymbol *bsym; | |
2281 | { | |
2282 | if (LOCAL_SYMBOL_CHECK (s)) | |
2283 | s = local_symbol_convert ((struct local_symbol *) s); | |
2284 | s->bsym = bsym; | |
2285 | } | |
2286 | ||
2287 | #endif /* BFD_ASSEMBLER */ | |
2288 | ||
2289 | #ifdef OBJ_SYMFIELD_TYPE | |
2290 | ||
2291 | /* Get a pointer to the object format information for a symbol. */ | |
2292 | ||
2293 | OBJ_SYMFIELD_TYPE * | |
2294 | symbol_get_obj (s) | |
2295 | symbolS *s; | |
2296 | { | |
2297 | if (LOCAL_SYMBOL_CHECK (s)) | |
2298 | s = local_symbol_convert ((struct local_symbol *) s); | |
2299 | return &s->sy_obj; | |
2300 | } | |
2301 | ||
2302 | /* Set the object format information for a symbol. */ | |
2303 | ||
2304 | void | |
2305 | symbol_set_obj (s, o) | |
2306 | symbolS *s; | |
2307 | OBJ_SYMFIELD_TYPE *o; | |
2308 | { | |
2309 | if (LOCAL_SYMBOL_CHECK (s)) | |
2310 | s = local_symbol_convert ((struct local_symbol *) s); | |
2311 | s->sy_obj = *o; | |
2312 | } | |
2313 | ||
2314 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2315 | ||
2316 | #ifdef TC_SYMFIELD_TYPE | |
2317 | ||
2318 | /* Get a pointer to the processor information for a symbol. */ | |
2319 | ||
2320 | TC_SYMFIELD_TYPE * | |
2321 | symbol_get_tc (s) | |
2322 | symbolS *s; | |
2323 | { | |
2324 | if (LOCAL_SYMBOL_CHECK (s)) | |
2325 | s = local_symbol_convert ((struct local_symbol *) s); | |
2326 | return &s->sy_tc; | |
2327 | } | |
2328 | ||
2329 | /* Set the processor information for a symbol. */ | |
2330 | ||
2331 | void | |
bf27257e | 2332 | symbol_set_tc (s, o) |
49309057 ILT |
2333 | symbolS *s; |
2334 | TC_SYMFIELD_TYPE *o; | |
2335 | { | |
2336 | if (LOCAL_SYMBOL_CHECK (s)) | |
2337 | s = local_symbol_convert ((struct local_symbol *) s); | |
2338 | s->sy_tc = *o; | |
2339 | } | |
2340 | ||
2341 | #endif /* TC_SYMFIELD_TYPE */ | |
2342 | ||
252b5132 RH |
2343 | void |
2344 | symbol_begin () | |
2345 | { | |
2346 | symbol_lastP = NULL; | |
7c743825 | 2347 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2348 | sy_hash = hash_new (); |
49309057 ILT |
2349 | #ifdef BFD_ASSEMBLER |
2350 | local_hash = hash_new (); | |
2351 | #endif | |
252b5132 RH |
2352 | |
2353 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2354 | #ifdef BFD_ASSEMBLER | |
2355 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2356 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2357 | #endif | |
2358 | #else | |
7c743825 | 2359 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2360 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2361 | #endif | |
2362 | abs_symbol.sy_value.X_op = O_constant; | |
2363 | abs_symbol.sy_frag = &zero_address_frag; | |
2364 | ||
2365 | if (LOCAL_LABELS_FB) | |
2366 | fb_label_init (); | |
2367 | } | |
252b5132 RH |
2368 | \f |
2369 | int indent_level; | |
2370 | ||
2371 | /* Maximum indent level. | |
2372 | Available for modification inside a gdb session. */ | |
2373 | int max_indent_level = 8; | |
2374 | ||
2375 | #if 0 | |
2376 | ||
2377 | static void | |
2378 | indent () | |
2379 | { | |
2380 | printf ("%*s", indent_level * 4, ""); | |
2381 | } | |
2382 | ||
2383 | #endif | |
2384 | ||
2385 | void | |
2386 | print_symbol_value_1 (file, sym) | |
2387 | FILE *file; | |
2388 | symbolS *sym; | |
2389 | { | |
2390 | const char *name = S_GET_NAME (sym); | |
2391 | if (!name || !name[0]) | |
2392 | name = "(unnamed)"; | |
2393 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2394 | |
2395 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2396 | { | |
a1605869 | 2397 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2398 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2399 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2400 | && local_symbol_get_frag (locsym) != NULL) | |
2401 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2402 | if (local_symbol_resolved_p (locsym)) | |
2403 | fprintf (file, " resolved"); | |
2404 | fprintf (file, " local"); | |
a1605869 | 2405 | #endif |
49309057 ILT |
2406 | } |
2407 | else | |
2408 | { | |
2409 | if (sym->sy_frag != &zero_address_frag) | |
2410 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2411 | if (sym->written) | |
2412 | fprintf (file, " written"); | |
2413 | if (sym->sy_resolved) | |
2414 | fprintf (file, " resolved"); | |
2415 | else if (sym->sy_resolving) | |
2416 | fprintf (file, " resolving"); | |
2417 | if (sym->sy_used_in_reloc) | |
2418 | fprintf (file, " used-in-reloc"); | |
2419 | if (sym->sy_used) | |
2420 | fprintf (file, " used"); | |
2421 | if (S_IS_LOCAL (sym)) | |
2422 | fprintf (file, " local"); | |
2423 | if (S_IS_EXTERN (sym)) | |
2424 | fprintf (file, " extern"); | |
2425 | if (S_IS_DEBUG (sym)) | |
2426 | fprintf (file, " debug"); | |
2427 | if (S_IS_DEFINED (sym)) | |
2428 | fprintf (file, " defined"); | |
2429 | } | |
252b5132 | 2430 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2431 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2432 | { |
2433 | segT s = S_GET_SEGMENT (sym); | |
2434 | ||
2435 | if (s != undefined_section | |
411863a4 | 2436 | && s != expr_section) |
252b5132 RH |
2437 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); |
2438 | } | |
2439 | else if (indent_level < max_indent_level | |
2440 | && S_GET_SEGMENT (sym) != undefined_section) | |
2441 | { | |
2442 | indent_level++; | |
2443 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2444 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2445 | if (LOCAL_SYMBOL_CHECK (sym)) |
2446 | fprintf (file, "constant %lx", | |
bd780143 | 2447 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2448 | else |
a1605869 | 2449 | #endif |
49309057 | 2450 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2451 | fprintf (file, ">"); |
2452 | indent_level--; | |
2453 | } | |
2454 | fflush (file); | |
2455 | } | |
2456 | ||
2457 | void | |
2458 | print_symbol_value (sym) | |
2459 | symbolS *sym; | |
2460 | { | |
2461 | indent_level = 0; | |
2462 | print_symbol_value_1 (stderr, sym); | |
2463 | fprintf (stderr, "\n"); | |
2464 | } | |
2465 | ||
2466 | static void | |
2467 | print_binary (file, name, exp) | |
2468 | FILE *file; | |
7c743825 | 2469 | const char *name; |
252b5132 RH |
2470 | expressionS *exp; |
2471 | { | |
2472 | indent_level++; | |
2473 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2474 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2475 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2476 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2477 | fprintf (file, ">"); | |
2478 | indent_level--; | |
2479 | } | |
2480 | ||
2481 | void | |
2482 | print_expr_1 (file, exp) | |
2483 | FILE *file; | |
2484 | expressionS *exp; | |
2485 | { | |
2486 | fprintf (file, "expr %lx ", (long) exp); | |
2487 | switch (exp->X_op) | |
2488 | { | |
2489 | case O_illegal: | |
2490 | fprintf (file, "illegal"); | |
2491 | break; | |
2492 | case O_absent: | |
2493 | fprintf (file, "absent"); | |
2494 | break; | |
2495 | case O_constant: | |
2496 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2497 | break; | |
2498 | case O_symbol: | |
2499 | indent_level++; | |
2500 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2501 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2502 | fprintf (file, ">"); | |
2503 | maybe_print_addnum: | |
2504 | if (exp->X_add_number) | |
2505 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2506 | (long) exp->X_add_number); | |
2507 | indent_level--; | |
2508 | break; | |
2509 | case O_register: | |
2510 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2511 | break; | |
2512 | case O_big: | |
2513 | fprintf (file, "big"); | |
2514 | break; | |
2515 | case O_uminus: | |
2516 | fprintf (file, "uminus -<"); | |
2517 | indent_level++; | |
2518 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2519 | fprintf (file, ">"); | |
2520 | goto maybe_print_addnum; | |
2521 | case O_bit_not: | |
2522 | fprintf (file, "bit_not"); | |
2523 | break; | |
2524 | case O_multiply: | |
2525 | print_binary (file, "multiply", exp); | |
2526 | break; | |
2527 | case O_divide: | |
2528 | print_binary (file, "divide", exp); | |
2529 | break; | |
2530 | case O_modulus: | |
2531 | print_binary (file, "modulus", exp); | |
2532 | break; | |
2533 | case O_left_shift: | |
2534 | print_binary (file, "lshift", exp); | |
2535 | break; | |
2536 | case O_right_shift: | |
2537 | print_binary (file, "rshift", exp); | |
2538 | break; | |
2539 | case O_bit_inclusive_or: | |
2540 | print_binary (file, "bit_ior", exp); | |
2541 | break; | |
2542 | case O_bit_exclusive_or: | |
2543 | print_binary (file, "bit_xor", exp); | |
2544 | break; | |
2545 | case O_bit_and: | |
2546 | print_binary (file, "bit_and", exp); | |
2547 | break; | |
2548 | case O_eq: | |
2549 | print_binary (file, "eq", exp); | |
2550 | break; | |
2551 | case O_ne: | |
2552 | print_binary (file, "ne", exp); | |
2553 | break; | |
2554 | case O_lt: | |
2555 | print_binary (file, "lt", exp); | |
2556 | break; | |
2557 | case O_le: | |
2558 | print_binary (file, "le", exp); | |
2559 | break; | |
2560 | case O_ge: | |
2561 | print_binary (file, "ge", exp); | |
2562 | break; | |
2563 | case O_gt: | |
2564 | print_binary (file, "gt", exp); | |
2565 | break; | |
2566 | case O_logical_and: | |
2567 | print_binary (file, "logical_and", exp); | |
2568 | break; | |
2569 | case O_logical_or: | |
2570 | print_binary (file, "logical_or", exp); | |
2571 | break; | |
2572 | case O_add: | |
2573 | indent_level++; | |
2574 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2575 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2576 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2577 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2578 | fprintf (file, ">"); | |
2579 | goto maybe_print_addnum; | |
2580 | case O_subtract: | |
2581 | indent_level++; | |
2582 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2583 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2584 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2585 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2586 | fprintf (file, ">"); | |
2587 | goto maybe_print_addnum; | |
2588 | default: | |
2589 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2590 | break; | |
2591 | } | |
2592 | fflush (stdout); | |
2593 | } | |
2594 | ||
2595 | void | |
2596 | print_expr (exp) | |
2597 | expressionS *exp; | |
2598 | { | |
2599 | print_expr_1 (stderr, exp); | |
2600 | fprintf (stderr, "\n"); | |
2601 | } | |
2602 | ||
2603 | void | |
2604 | symbol_print_statistics (file) | |
2605 | FILE *file; | |
2606 | { | |
2607 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2608 | #ifdef BFD_ASSEMBLER |
2609 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2610 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2611 | local_symbol_count, local_symbol_conversion_count); | |
2612 | #endif | |
252b5132 | 2613 | } |