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 RH |
24 | |
25 | #include <ctype.h> | |
26 | ||
27 | #include "as.h" | |
28 | ||
29 | #include "obstack.h" /* For "symbols.h" */ | |
30 | #include "subsegs.h" | |
31 | ||
49309057 ILT |
32 | #include "struc-symbol.h" |
33 | ||
252b5132 RH |
34 | /* This is non-zero if symbols are case sensitive, which is the |
35 | default. */ | |
36 | int symbols_case_sensitive = 1; | |
37 | ||
38 | #ifndef WORKING_DOT_WORD | |
39 | extern int new_broken_words; | |
40 | #endif | |
41 | ||
42 | /* symbol-name => struct symbol pointer */ | |
43 | static struct hash_control *sy_hash; | |
44 | ||
49309057 ILT |
45 | /* Table of local symbols. */ |
46 | static struct hash_control *local_hash; | |
47 | ||
7c743825 | 48 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
49 | symbolS *symbol_rootP; |
50 | symbolS *symbol_lastP; | |
51 | symbolS abs_symbol; | |
52 | ||
53 | #ifdef DEBUG_SYMS | |
54 | #define debug_verify_symchain verify_symbol_chain | |
55 | #else | |
56 | #define debug_verify_symchain(root, last) ((void) 0) | |
57 | #endif | |
58 | ||
aa257fcd NC |
59 | #define DOLLAR_LABEL_CHAR '\001' |
60 | #define LOCAL_LABEL_CHAR '\002' | |
61 | ||
252b5132 RH |
62 | struct obstack notes; |
63 | ||
8d28c9d7 | 64 | static char *save_symbol_name PARAMS ((const char *)); |
252b5132 RH |
65 | static void fb_label_init PARAMS ((void)); |
66 | static long dollar_label_instance PARAMS ((long)); | |
67 | static long fb_label_instance PARAMS ((long)); | |
68 | ||
69 | static void print_binary PARAMS ((FILE *, const char *, expressionS *)); | |
70 | ||
7c743825 | 71 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
72 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
73 | chain. | |
7c743825 | 74 | |
252b5132 RH |
75 | This function should be called in the general case of creating a |
76 | symbol. However, if the output file symbol table has already been | |
77 | set, and you are certain that this symbol won't be wanted in the | |
78 | output file, you can call symbol_create. */ | |
79 | ||
80 | symbolS * | |
81 | symbol_new (name, segment, valu, frag) | |
82 | const char *name; | |
83 | segT segment; | |
84 | valueT valu; | |
85 | fragS *frag; | |
86 | { | |
87 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
88 | ||
7c743825 | 89 | /* Link to end of symbol chain. */ |
252b5132 RH |
90 | #ifdef BFD_ASSEMBLER |
91 | { | |
92 | extern int symbol_table_frozen; | |
93 | if (symbol_table_frozen) | |
94 | abort (); | |
95 | } | |
96 | #endif | |
97 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
98 | ||
99 | return symbolP; | |
100 | } | |
101 | ||
49309057 ILT |
102 | /* Save a symbol name on a permanent obstack, and convert it according |
103 | to the object file format. */ | |
104 | ||
105 | static char * | |
106 | save_symbol_name (name) | |
107 | const char *name; | |
252b5132 RH |
108 | { |
109 | unsigned int name_length; | |
49309057 | 110 | char *ret; |
252b5132 | 111 | |
7c743825 | 112 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 113 | obstack_grow (¬es, name, name_length); |
49309057 ILT |
114 | ret = obstack_finish (¬es); |
115 | ||
252b5132 | 116 | #ifdef STRIP_UNDERSCORE |
49309057 ILT |
117 | if (ret[0] == '_') |
118 | ++ret; | |
252b5132 RH |
119 | #endif |
120 | ||
121 | #ifdef tc_canonicalize_symbol_name | |
49309057 | 122 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
123 | #endif |
124 | ||
125 | if (! symbols_case_sensitive) | |
126 | { | |
127 | unsigned char *s; | |
128 | ||
49309057 | 129 | for (s = (unsigned char *) ret; *s != '\0'; s++) |
252b5132 RH |
130 | if (islower (*s)) |
131 | *s = toupper (*s); | |
132 | } | |
133 | ||
49309057 ILT |
134 | return ret; |
135 | } | |
136 | ||
137 | symbolS * | |
138 | symbol_create (name, segment, valu, frag) | |
7c743825 KH |
139 | const char *name; /* It is copied, the caller can destroy/modify. */ |
140 | segT segment; /* Segment identifier (SEG_<something>). */ | |
141 | valueT valu; /* Symbol value. */ | |
142 | fragS *frag; /* Associated fragment. */ | |
49309057 ILT |
143 | { |
144 | char *preserved_copy_of_name; | |
145 | symbolS *symbolP; | |
146 | ||
147 | preserved_copy_of_name = save_symbol_name (name); | |
148 | ||
252b5132 RH |
149 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
150 | ||
7c743825 | 151 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
152 | memset (symbolP, 0, sizeof (symbolS)); |
153 | ||
154 | #ifdef BFD_ASSEMBLER | |
155 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); | |
156 | if (symbolP->bsym == NULL) | |
157 | as_perror ("%s", "bfd_make_empty_symbol"); | |
158 | symbolP->bsym->udata.p = (PTR) symbolP; | |
159 | #endif | |
160 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
161 | ||
162 | S_SET_SEGMENT (symbolP, segment); | |
163 | S_SET_VALUE (symbolP, valu); | |
164 | symbol_clear_list_pointers (symbolP); | |
165 | ||
166 | symbolP->sy_frag = frag; | |
167 | #ifndef BFD_ASSEMBLER | |
168 | symbolP->sy_number = ~0; | |
169 | symbolP->sy_name_offset = (unsigned int) ~0; | |
170 | #endif | |
171 | ||
172 | obj_symbol_new_hook (symbolP); | |
173 | ||
174 | #ifdef tc_symbol_new_hook | |
175 | tc_symbol_new_hook (symbolP); | |
176 | #endif | |
177 | ||
178 | return symbolP; | |
179 | } | |
180 | \f | |
49309057 ILT |
181 | #ifdef BFD_ASSEMBLER |
182 | ||
183 | /* Local symbol support. If we can get away with it, we keep only a | |
184 | small amount of information for local symbols. */ | |
185 | ||
186 | static struct local_symbol *local_symbol_make PARAMS ((const char *, segT, | |
187 | valueT, fragS *)); | |
188 | static symbolS *local_symbol_convert PARAMS ((struct local_symbol *)); | |
189 | ||
190 | /* Used for statistics. */ | |
191 | ||
192 | static unsigned long local_symbol_count; | |
193 | static unsigned long local_symbol_conversion_count; | |
194 | ||
195 | /* This macro is called with a symbol argument passed by reference. | |
196 | It returns whether this is a local symbol. If necessary, it | |
197 | changes its argument to the real symbol. */ | |
198 | ||
199 | #define LOCAL_SYMBOL_CHECK(s) \ | |
200 | (s->bsym == NULL \ | |
201 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
202 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
203 | 0) \ | |
204 | : 1) \ | |
205 | : 0) | |
206 | ||
207 | /* Create a local symbol and insert it into the local hash table. */ | |
208 | ||
209 | static struct local_symbol * | |
bd780143 | 210 | local_symbol_make (name, section, value, frag) |
49309057 ILT |
211 | const char *name; |
212 | segT section; | |
bd780143 | 213 | valueT value; |
49309057 ILT |
214 | fragS *frag; |
215 | { | |
216 | char *name_copy; | |
217 | struct local_symbol *ret; | |
218 | ||
219 | ++local_symbol_count; | |
220 | ||
221 | name_copy = save_symbol_name (name); | |
222 | ||
223 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
224 | ret->lsy_marker = NULL; | |
225 | ret->lsy_name = name_copy; | |
226 | ret->lsy_section = section; | |
227 | local_symbol_set_frag (ret, frag); | |
bd780143 | 228 | ret->lsy_value = value; |
49309057 ILT |
229 | |
230 | hash_jam (local_hash, name_copy, (PTR) ret); | |
231 | ||
232 | return ret; | |
233 | } | |
234 | ||
235 | /* Convert a local symbol into a real symbol. Note that we do not | |
236 | reclaim the space used by the local symbol. */ | |
237 | ||
238 | static symbolS * | |
239 | local_symbol_convert (locsym) | |
240 | struct local_symbol *locsym; | |
241 | { | |
242 | symbolS *ret; | |
243 | ||
244 | assert (locsym->lsy_marker == NULL); | |
245 | if (local_symbol_converted_p (locsym)) | |
246 | return local_symbol_get_real_symbol (locsym); | |
247 | ||
248 | ++local_symbol_conversion_count; | |
249 | ||
bd780143 | 250 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
251 | local_symbol_get_frag (locsym)); |
252 | ||
253 | if (local_symbol_resolved_p (locsym)) | |
254 | ret->sy_resolved = 1; | |
255 | ||
256 | /* Local symbols are always either defined or used. */ | |
257 | ret->sy_used = 1; | |
258 | ||
8c5e1ccd AO |
259 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
260 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
261 | #endif | |
262 | ||
49309057 ILT |
263 | symbol_table_insert (ret); |
264 | ||
265 | local_symbol_mark_converted (locsym); | |
266 | local_symbol_set_real_symbol (locsym, ret); | |
267 | ||
268 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
269 | ||
270 | return ret; | |
271 | } | |
272 | ||
273 | #else /* ! BFD_ASSEMBLER */ | |
274 | ||
275 | #define LOCAL_SYMBOL_CHECK(s) 0 | |
276 | #define local_symbol_convert(s) ((symbolS *) s) | |
277 | ||
278 | #endif /* ! BFD_ASSEMBLER */ | |
279 | \f | |
7c743825 KH |
280 | /* We have just seen "<name>:". |
281 | Creates a struct symbol unless it already exists. | |
282 | ||
283 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 284 | |
252b5132 | 285 | symbolS * |
7c743825 KH |
286 | colon (sym_name) /* Just seen "x:" - rattle symbols & frags. */ |
287 | const char *sym_name; /* Symbol name, as a cannonical string. */ | |
288 | /* We copy this string: OK to alter later. */ | |
252b5132 | 289 | { |
7c743825 | 290 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 RH |
291 | |
292 | /* Sun local labels go out of scope whenever a non-local symbol is | |
293 | defined. */ | |
294 | if (LOCAL_LABELS_DOLLAR) | |
295 | { | |
296 | int local; | |
297 | ||
298 | #ifdef BFD_ASSEMBLER | |
299 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
300 | #else | |
301 | local = LOCAL_LABEL (sym_name); | |
302 | #endif | |
303 | ||
304 | if (! local) | |
305 | dollar_label_clear (); | |
306 | } | |
307 | ||
308 | #ifndef WORKING_DOT_WORD | |
309 | if (new_broken_words) | |
310 | { | |
311 | struct broken_word *a; | |
312 | int possible_bytes; | |
313 | fragS *frag_tmp; | |
314 | char *frag_opcode; | |
315 | ||
316 | extern const int md_short_jump_size; | |
317 | extern const int md_long_jump_size; | |
318 | possible_bytes = (md_short_jump_size | |
319 | + new_broken_words * md_long_jump_size); | |
320 | ||
321 | frag_tmp = frag_now; | |
322 | frag_opcode = frag_var (rs_broken_word, | |
323 | possible_bytes, | |
324 | possible_bytes, | |
325 | (relax_substateT) 0, | |
326 | (symbolS *) broken_words, | |
327 | (offsetT) 0, | |
328 | NULL); | |
329 | ||
7c743825 KH |
330 | /* We want to store the pointer to where to insert the jump |
331 | table in the fr_opcode of the rs_broken_word frag. This | |
332 | requires a little hackery. */ | |
252b5132 RH |
333 | while (frag_tmp |
334 | && (frag_tmp->fr_type != rs_broken_word | |
335 | || frag_tmp->fr_opcode)) | |
336 | frag_tmp = frag_tmp->fr_next; | |
337 | know (frag_tmp); | |
338 | frag_tmp->fr_opcode = frag_opcode; | |
339 | new_broken_words = 0; | |
340 | ||
341 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
342 | a->dispfrag = frag_tmp; | |
343 | } | |
344 | #endif /* WORKING_DOT_WORD */ | |
345 | ||
346 | if ((symbolP = symbol_find (sym_name)) != 0) | |
347 | { | |
348 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
349 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
350 | return symbolP; | |
351 | #endif | |
7c743825 | 352 | /* Now check for undefined symbols. */ |
49309057 ILT |
353 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
354 | { | |
a1605869 | 355 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
356 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
357 | ||
358 | if (locsym->lsy_section != undefined_section | |
359 | && (local_symbol_get_frag (locsym) != frag_now | |
360 | || locsym->lsy_section != now_seg | |
bd780143 | 361 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 362 | { |
0e389e77 | 363 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
364 | return symbolP; |
365 | } | |
366 | ||
367 | locsym->lsy_section = now_seg; | |
368 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 369 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 370 | #endif |
49309057 ILT |
371 | } |
372 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
373 | { |
374 | if (S_GET_VALUE (symbolP) == 0) | |
375 | { | |
376 | symbolP->sy_frag = frag_now; | |
377 | #ifdef OBJ_VMS | |
7c743825 | 378 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
379 | #endif |
380 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
381 | S_SET_SEGMENT (symbolP, now_seg); | |
382 | #ifdef N_UNDF | |
383 | know (N_UNDF == 0); | |
7c743825 | 384 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
385 | |
386 | } | |
387 | else | |
388 | { | |
7c743825 KH |
389 | /* There are still several cases to check: |
390 | ||
391 | A .comm/.lcomm symbol being redefined as initialized | |
392 | data is OK | |
393 | ||
394 | A .comm/.lcomm symbol being redefined with a larger | |
395 | size is also OK | |
396 | ||
397 | This only used to be allowed on VMS gas, but Sun cc | |
398 | on the sparc also depends on it. */ | |
252b5132 RH |
399 | |
400 | if (((!S_IS_DEBUG (symbolP) | |
401 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
402 | && S_IS_EXTERNAL (symbolP)) | |
403 | || S_GET_SEGMENT (symbolP) == bss_section) | |
404 | && (now_seg == data_section | |
405 | || now_seg == S_GET_SEGMENT (symbolP))) | |
406 | { | |
7c743825 | 407 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
408 | if (now_seg != data_section) |
409 | { | |
7c743825 KH |
410 | /* New .comm for prev .comm symbol. |
411 | ||
412 | If the new size is larger we just change its | |
413 | value. If the new size is smaller, we ignore | |
414 | this symbol. */ | |
252b5132 RH |
415 | if (S_GET_VALUE (symbolP) |
416 | < ((unsigned) frag_now_fix ())) | |
417 | { | |
418 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
419 | } | |
420 | } | |
421 | else | |
422 | { | |
423 | /* It is a .comm/.lcomm being converted to initialized | |
424 | data. */ | |
425 | symbolP->sy_frag = frag_now; | |
426 | #ifdef OBJ_VMS | |
7c743825 | 427 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
428 | #endif |
429 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 430 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
431 | } |
432 | } | |
433 | else | |
434 | { | |
4c63da97 AM |
435 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
436 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
437 | static const char *od_buf = ""; | |
252b5132 | 438 | #else |
4c63da97 AM |
439 | char od_buf[100]; |
440 | od_buf[0] = '\0'; | |
441 | #ifdef BFD_ASSEMBLER | |
442 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
443 | #endif | |
444 | sprintf(od_buf, "%d.%d.", | |
445 | S_GET_OTHER (symbolP), | |
446 | S_GET_DESC (symbolP)); | |
447 | #endif | |
0e389e77 | 448 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
449 | sym_name, |
450 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 451 | od_buf, |
252b5132 | 452 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 453 | } |
7c743825 | 454 | } /* if the undefined symbol has no value */ |
252b5132 RH |
455 | } |
456 | else | |
457 | { | |
7c743825 | 458 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
459 | if (!(frag_now == symbolP->sy_frag |
460 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
461 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 462 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 463 | } |
252b5132 RH |
464 | |
465 | } | |
49309057 ILT |
466 | #ifdef BFD_ASSEMBLER |
467 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
468 | { | |
469 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
470 | (valueT) frag_now_fix (), | |
471 | frag_now); | |
472 | } | |
473 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
474 | else |
475 | { | |
476 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
477 | frag_now); | |
478 | #ifdef OBJ_VMS | |
479 | S_SET_OTHER (symbolP, const_flag); | |
480 | #endif /* OBJ_VMS */ | |
481 | ||
482 | symbol_table_insert (symbolP); | |
d4887adc | 483 | } |
252b5132 RH |
484 | |
485 | if (mri_common_symbol != NULL) | |
486 | { | |
487 | /* This symbol is actually being defined within an MRI common | |
488 | section. This requires special handling. */ | |
49309057 ILT |
489 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
490 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
491 | symbolP->sy_value.X_op = O_symbol; |
492 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
493 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
494 | symbolP->sy_frag = &zero_address_frag; | |
495 | S_SET_SEGMENT (symbolP, expr_section); | |
496 | symbolP->sy_mri_common = 1; | |
497 | } | |
498 | ||
499 | #ifdef tc_frob_label | |
500 | tc_frob_label (symbolP); | |
501 | #endif | |
502 | #ifdef obj_frob_label | |
503 | obj_frob_label (symbolP); | |
504 | #endif | |
505 | ||
506 | return symbolP; | |
507 | } | |
508 | \f | |
7c743825 | 509 | /* Die if we can't insert the symbol. */ |
252b5132 | 510 | |
7c743825 | 511 | void |
252b5132 RH |
512 | symbol_table_insert (symbolP) |
513 | symbolS *symbolP; | |
514 | { | |
515 | register const char *error_string; | |
516 | ||
517 | know (symbolP); | |
518 | know (S_GET_NAME (symbolP)); | |
519 | ||
49309057 ILT |
520 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
521 | { | |
522 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
523 | (PTR) symbolP); | |
524 | if (error_string != NULL) | |
0e389e77 | 525 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
526 | S_GET_NAME (symbolP), error_string); |
527 | return; | |
528 | } | |
529 | ||
252b5132 RH |
530 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
531 | { | |
0e389e77 | 532 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 533 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
534 | } /* on error */ |
535 | } | |
252b5132 | 536 | \f |
7c743825 KH |
537 | /* If a symbol name does not exist, create it as undefined, and insert |
538 | it into the symbol table. Return a pointer to it. */ | |
539 | ||
252b5132 RH |
540 | symbolS * |
541 | symbol_find_or_make (name) | |
542 | const char *name; | |
543 | { | |
544 | register symbolS *symbolP; | |
545 | ||
546 | symbolP = symbol_find (name); | |
547 | ||
548 | if (symbolP == NULL) | |
549 | { | |
49309057 ILT |
550 | #ifdef BFD_ASSEMBLER |
551 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
552 | { | |
553 | symbolP = md_undefined_symbol ((char *) name); | |
554 | if (symbolP != NULL) | |
555 | return symbolP; | |
556 | ||
557 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
558 | (valueT) 0, | |
559 | &zero_address_frag); | |
560 | return symbolP; | |
561 | } | |
562 | #endif | |
563 | ||
252b5132 RH |
564 | symbolP = symbol_make (name); |
565 | ||
566 | symbol_table_insert (symbolP); | |
567 | } /* if symbol wasn't found */ | |
568 | ||
569 | return (symbolP); | |
7c743825 | 570 | } |
252b5132 RH |
571 | |
572 | symbolS * | |
573 | symbol_make (name) | |
574 | CONST char *name; | |
575 | { | |
576 | symbolS *symbolP; | |
577 | ||
7c743825 | 578 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
579 | symbolP = md_undefined_symbol ((char *) name); |
580 | ||
581 | if (!symbolP) | |
582 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
583 | ||
584 | return (symbolP); | |
7c743825 | 585 | } |
252b5132 | 586 | |
7c743825 KH |
587 | /* Implement symbol table lookup. |
588 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
589 | Out: NULL if the name was not in the symbol table, else the address | |
590 | of a struct symbol associated with that name. */ | |
252b5132 RH |
591 | |
592 | symbolS * | |
593 | symbol_find (name) | |
594 | CONST char *name; | |
595 | { | |
596 | #ifdef STRIP_UNDERSCORE | |
597 | return (symbol_find_base (name, 1)); | |
598 | #else /* STRIP_UNDERSCORE */ | |
599 | return (symbol_find_base (name, 0)); | |
600 | #endif /* STRIP_UNDERSCORE */ | |
7c743825 | 601 | } |
252b5132 RH |
602 | |
603 | symbolS * | |
604 | symbol_find_base (name, strip_underscore) | |
605 | CONST char *name; | |
606 | int strip_underscore; | |
607 | { | |
608 | if (strip_underscore && *name == '_') | |
609 | name++; | |
610 | ||
611 | #ifdef tc_canonicalize_symbol_name | |
612 | { | |
613 | char *copy; | |
03987ced | 614 | size_t len = strlen (name) + 1; |
252b5132 | 615 | |
03987ced RH |
616 | copy = (char *) alloca (len); |
617 | memcpy (copy, name, len); | |
252b5132 RH |
618 | name = tc_canonicalize_symbol_name (copy); |
619 | } | |
620 | #endif | |
621 | ||
622 | if (! symbols_case_sensitive) | |
623 | { | |
03987ced RH |
624 | char *copy; |
625 | const char *orig; | |
626 | unsigned char c; | |
627 | ||
628 | orig = name; | |
629 | name = copy = (char *) alloca (strlen (name) + 1); | |
630 | ||
631 | while ((c = *orig++) != '\0') | |
632 | { | |
633 | if (islower (c)) | |
634 | c = toupper (c); | |
635 | *copy++ = c; | |
636 | } | |
637 | *copy = '\0'; | |
252b5132 RH |
638 | } |
639 | ||
a1605869 ILT |
640 | #ifdef BFD_ASSEMBLER |
641 | { | |
642 | struct local_symbol *locsym; | |
643 | ||
644 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
645 | if (locsym != NULL) | |
646 | return (symbolS *) locsym; | |
647 | } | |
648 | #endif | |
49309057 | 649 | |
252b5132 RH |
650 | return ((symbolS *) hash_find (sy_hash, name)); |
651 | } | |
652 | ||
7c743825 KH |
653 | /* Once upon a time, symbols were kept in a singly linked list. At |
654 | least coff needs to be able to rearrange them from time to time, for | |
655 | which a doubly linked list is much more convenient. Loic did these | |
656 | as macros which seemed dangerous to me so they're now functions. | |
657 | xoxorich. */ | |
658 | ||
659 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 660 | |
7c743825 | 661 | void |
252b5132 RH |
662 | symbol_append (addme, target, rootPP, lastPP) |
663 | symbolS *addme; | |
664 | symbolS *target; | |
665 | symbolS **rootPP; | |
666 | symbolS **lastPP; | |
667 | { | |
49309057 ILT |
668 | if (LOCAL_SYMBOL_CHECK (addme)) |
669 | abort (); | |
670 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
671 | abort (); | |
672 | ||
252b5132 RH |
673 | if (target == NULL) |
674 | { | |
675 | know (*rootPP == NULL); | |
676 | know (*lastPP == NULL); | |
677 | addme->sy_next = NULL; | |
678 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
679 | addme->sy_previous = NULL; | |
680 | #endif | |
681 | *rootPP = addme; | |
682 | *lastPP = addme; | |
683 | return; | |
7c743825 | 684 | } /* if the list is empty */ |
252b5132 RH |
685 | |
686 | if (target->sy_next != NULL) | |
687 | { | |
688 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
689 | target->sy_next->sy_previous = addme; | |
690 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
691 | } | |
692 | else | |
693 | { | |
694 | know (*lastPP == target); | |
695 | *lastPP = addme; | |
7c743825 | 696 | } /* if we have a next */ |
252b5132 RH |
697 | |
698 | addme->sy_next = target->sy_next; | |
699 | target->sy_next = addme; | |
700 | ||
701 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
702 | addme->sy_previous = target; | |
703 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
704 | ||
705 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
706 | } | |
707 | ||
7c743825 KH |
708 | /* Set the chain pointers of SYMBOL to null. */ |
709 | ||
710 | void | |
252b5132 RH |
711 | symbol_clear_list_pointers (symbolP) |
712 | symbolS *symbolP; | |
713 | { | |
49309057 ILT |
714 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
715 | abort (); | |
252b5132 RH |
716 | symbolP->sy_next = NULL; |
717 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
718 | symbolP->sy_previous = NULL; | |
719 | #endif | |
720 | } | |
721 | ||
722 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
723 | /* Remove SYMBOLP from the list. */ |
724 | ||
725 | void | |
252b5132 RH |
726 | symbol_remove (symbolP, rootPP, lastPP) |
727 | symbolS *symbolP; | |
728 | symbolS **rootPP; | |
729 | symbolS **lastPP; | |
730 | { | |
49309057 ILT |
731 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
732 | abort (); | |
733 | ||
252b5132 RH |
734 | if (symbolP == *rootPP) |
735 | { | |
736 | *rootPP = symbolP->sy_next; | |
7c743825 | 737 | } /* if it was the root */ |
252b5132 RH |
738 | |
739 | if (symbolP == *lastPP) | |
740 | { | |
741 | *lastPP = symbolP->sy_previous; | |
7c743825 | 742 | } /* if it was the tail */ |
252b5132 RH |
743 | |
744 | if (symbolP->sy_next != NULL) | |
745 | { | |
746 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 747 | } /* if not last */ |
252b5132 RH |
748 | |
749 | if (symbolP->sy_previous != NULL) | |
750 | { | |
751 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 752 | } /* if not first */ |
252b5132 RH |
753 | |
754 | debug_verify_symchain (*rootPP, *lastPP); | |
755 | } | |
756 | ||
7c743825 KH |
757 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
758 | ||
759 | void | |
252b5132 RH |
760 | symbol_insert (addme, target, rootPP, lastPP) |
761 | symbolS *addme; | |
762 | symbolS *target; | |
763 | symbolS **rootPP; | |
ab9da554 | 764 | symbolS **lastPP ATTRIBUTE_UNUSED; |
252b5132 | 765 | { |
49309057 ILT |
766 | if (LOCAL_SYMBOL_CHECK (addme)) |
767 | abort (); | |
768 | if (LOCAL_SYMBOL_CHECK (target)) | |
769 | abort (); | |
770 | ||
252b5132 RH |
771 | if (target->sy_previous != NULL) |
772 | { | |
773 | target->sy_previous->sy_next = addme; | |
774 | } | |
775 | else | |
776 | { | |
777 | know (*rootPP == target); | |
778 | *rootPP = addme; | |
7c743825 | 779 | } /* if not first */ |
252b5132 RH |
780 | |
781 | addme->sy_previous = target->sy_previous; | |
782 | target->sy_previous = addme; | |
783 | addme->sy_next = target; | |
784 | ||
785 | debug_verify_symchain (*rootPP, *lastPP); | |
786 | } | |
787 | ||
788 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
789 | ||
7c743825 | 790 | void |
252b5132 RH |
791 | verify_symbol_chain (rootP, lastP) |
792 | symbolS *rootP; | |
793 | symbolS *lastP; | |
794 | { | |
795 | symbolS *symbolP = rootP; | |
796 | ||
797 | if (symbolP == NULL) | |
798 | return; | |
799 | ||
800 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
801 | { | |
49309057 ILT |
802 | #ifdef BFD_ASSEMBLER |
803 | assert (symbolP->bsym != NULL); | |
804 | #endif | |
252b5132 RH |
805 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
806 | assert (symbolP->sy_next->sy_previous == symbolP); | |
807 | #else | |
808 | /* Walk the list anyways, to make sure pointers are still good. */ | |
809 | ; | |
810 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
811 | } | |
812 | ||
813 | assert (lastP == symbolP); | |
814 | } | |
815 | ||
816 | void | |
817 | verify_symbol_chain_2 (sym) | |
818 | symbolS *sym; | |
819 | { | |
820 | symbolS *p = sym, *n = sym; | |
821 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
822 | while (symbol_previous (p)) | |
823 | p = symbol_previous (p); | |
824 | #endif | |
825 | while (symbol_next (n)) | |
826 | n = symbol_next (n); | |
827 | verify_symbol_chain (p, n); | |
828 | } | |
829 | ||
830 | /* Resolve the value of a symbol. This is called during the final | |
831 | pass over the symbol table to resolve any symbols with complex | |
832 | values. */ | |
833 | ||
834 | valueT | |
6386f3a7 | 835 | resolve_symbol_value (symp) |
252b5132 | 836 | symbolS *symp; |
252b5132 RH |
837 | { |
838 | int resolved; | |
839 | valueT final_val; | |
840 | segT final_seg; | |
841 | ||
a1605869 | 842 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
843 | if (LOCAL_SYMBOL_CHECK (symp)) |
844 | { | |
845 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
846 | ||
bd780143 | 847 | final_val = locsym->lsy_value; |
49309057 | 848 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 849 | return final_val; |
49309057 | 850 | |
bd780143 | 851 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 852 | |
6386f3a7 | 853 | if (finalize_syms) |
49309057 | 854 | { |
bd780143 | 855 | locsym->lsy_value = final_val; |
49309057 ILT |
856 | local_symbol_mark_resolved (locsym); |
857 | } | |
858 | ||
859 | return final_val; | |
860 | } | |
a1605869 | 861 | #endif |
49309057 | 862 | |
252b5132 RH |
863 | if (symp->sy_resolved) |
864 | { | |
865 | if (symp->sy_value.X_op == O_constant) | |
866 | return (valueT) symp->sy_value.X_add_number; | |
867 | else | |
868 | return 0; | |
869 | } | |
870 | ||
871 | resolved = 0; | |
872 | final_seg = S_GET_SEGMENT (symp); | |
873 | ||
874 | if (symp->sy_resolving) | |
875 | { | |
6386f3a7 | 876 | if (finalize_syms) |
0e389e77 | 877 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 878 | S_GET_NAME (symp)); |
252b5132 RH |
879 | final_val = 0; |
880 | resolved = 1; | |
881 | } | |
882 | else | |
883 | { | |
884 | symbolS *add_symbol, *op_symbol; | |
885 | offsetT left, right; | |
886 | segT seg_left, seg_right; | |
887 | operatorT op; | |
888 | ||
889 | symp->sy_resolving = 1; | |
890 | ||
891 | /* Help out with CSE. */ | |
892 | add_symbol = symp->sy_value.X_add_symbol; | |
893 | op_symbol = symp->sy_value.X_op_symbol; | |
894 | final_val = symp->sy_value.X_add_number; | |
895 | op = symp->sy_value.X_op; | |
896 | ||
897 | switch (op) | |
898 | { | |
899 | default: | |
900 | BAD_CASE (op); | |
901 | break; | |
902 | ||
903 | case O_absent: | |
904 | final_val = 0; | |
905 | /* Fall through. */ | |
906 | ||
907 | case O_constant: | |
bea9907b | 908 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
909 | if (final_seg == expr_section) |
910 | final_seg = absolute_section; | |
911 | resolved = 1; | |
912 | break; | |
913 | ||
914 | case O_symbol: | |
915 | case O_symbol_rva: | |
6386f3a7 | 916 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
917 | seg_left = S_GET_SEGMENT (add_symbol); |
918 | if (finalize_syms) | |
919 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 920 | |
e0890092 | 921 | do_symbol: |
252b5132 RH |
922 | if (symp->sy_mri_common) |
923 | { | |
924 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
925 | relocation routines are going to handle it specially. |
926 | Don't change the value. */ | |
49309057 | 927 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
928 | break; |
929 | } | |
930 | ||
6386f3a7 | 931 | if (finalize_syms && final_val == 0) |
49309057 ILT |
932 | { |
933 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
934 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
935 | add_symbol); | |
936 | copy_symbol_attributes (symp, add_symbol); | |
937 | } | |
252b5132 | 938 | |
e0890092 AM |
939 | /* If we have equated this symbol to an undefined or common |
940 | symbol, keep X_op set to O_symbol, and don't change | |
941 | X_add_number. This permits the routine which writes out | |
942 | relocation to detect this case, and convert the | |
943 | relocation to be against the symbol to which this symbol | |
944 | is equated. */ | |
252b5132 RH |
945 | if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol)) |
946 | { | |
6386f3a7 | 947 | if (finalize_syms) |
252b5132 | 948 | { |
252b5132 RH |
949 | symp->sy_value.X_op = O_symbol; |
950 | symp->sy_value.X_add_symbol = add_symbol; | |
951 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
952 | /* Use X_op_symbol as a flag. */ |
953 | symp->sy_value.X_op_symbol = add_symbol; | |
954 | final_seg = seg_left; | |
252b5132 RH |
955 | } |
956 | final_val = 0; | |
49309057 | 957 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 958 | symp->sy_resolving = 0; |
252b5132 RH |
959 | goto exit_dont_set_value; |
960 | } | |
e0890092 AM |
961 | else if (finalize_syms && final_seg == expr_section |
962 | && seg_left != expr_section) | |
963 | { | |
964 | /* If the symbol is an expression symbol, do similarly | |
965 | as for undefined and common syms above. Handles | |
966 | "sym +/- expr" where "expr" cannot be evaluated | |
967 | immediately, and we want relocations to be against | |
968 | "sym", eg. because it is weak. */ | |
969 | symp->sy_value.X_op = O_symbol; | |
970 | symp->sy_value.X_add_symbol = add_symbol; | |
971 | symp->sy_value.X_add_number = final_val; | |
972 | symp->sy_value.X_op_symbol = add_symbol; | |
973 | final_seg = seg_left; | |
974 | final_val += symp->sy_frag->fr_address + left; | |
975 | resolved = symbol_resolved_p (add_symbol); | |
976 | symp->sy_resolving = 0; | |
977 | goto exit_dont_set_value; | |
978 | } | |
252b5132 RH |
979 | else |
980 | { | |
981 | final_val += symp->sy_frag->fr_address + left; | |
982 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 983 | final_seg = seg_left; |
252b5132 RH |
984 | } |
985 | ||
49309057 | 986 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
987 | break; |
988 | ||
989 | case O_uminus: | |
990 | case O_bit_not: | |
991 | case O_logical_not: | |
6386f3a7 | 992 | left = resolve_symbol_value (add_symbol); |
252b5132 RH |
993 | |
994 | if (op == O_uminus) | |
995 | left = -left; | |
996 | else if (op == O_logical_not) | |
997 | left = !left; | |
998 | else | |
999 | left = ~left; | |
1000 | ||
1001 | final_val += left + symp->sy_frag->fr_address; | |
1002 | if (final_seg == expr_section || final_seg == undefined_section) | |
1003 | final_seg = absolute_section; | |
1004 | ||
49309057 | 1005 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1006 | break; |
1007 | ||
1008 | case O_multiply: | |
1009 | case O_divide: | |
1010 | case O_modulus: | |
1011 | case O_left_shift: | |
1012 | case O_right_shift: | |
1013 | case O_bit_inclusive_or: | |
1014 | case O_bit_or_not: | |
1015 | case O_bit_exclusive_or: | |
1016 | case O_bit_and: | |
1017 | case O_add: | |
1018 | case O_subtract: | |
1019 | case O_eq: | |
1020 | case O_ne: | |
1021 | case O_lt: | |
1022 | case O_le: | |
1023 | case O_ge: | |
1024 | case O_gt: | |
1025 | case O_logical_and: | |
1026 | case O_logical_or: | |
6386f3a7 AM |
1027 | left = resolve_symbol_value (add_symbol); |
1028 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1029 | seg_left = S_GET_SEGMENT (add_symbol); |
1030 | seg_right = S_GET_SEGMENT (op_symbol); | |
1031 | ||
1032 | /* Simplify addition or subtraction of a constant by folding the | |
1033 | constant into X_add_number. */ | |
e0890092 | 1034 | if (op == O_add) |
252b5132 RH |
1035 | { |
1036 | if (seg_right == absolute_section) | |
1037 | { | |
e0890092 | 1038 | final_val += right; |
252b5132 RH |
1039 | goto do_symbol; |
1040 | } | |
e0890092 | 1041 | else if (seg_left == absolute_section) |
252b5132 | 1042 | { |
252b5132 RH |
1043 | final_val += left; |
1044 | add_symbol = op_symbol; | |
1045 | left = right; | |
e0890092 AM |
1046 | seg_left = seg_right; |
1047 | goto do_symbol; | |
1048 | } | |
1049 | } | |
1050 | else if (op == O_subtract) | |
1051 | { | |
1052 | if (seg_right == absolute_section) | |
1053 | { | |
1054 | final_val -= right; | |
252b5132 RH |
1055 | goto do_symbol; |
1056 | } | |
1057 | } | |
1058 | ||
e0890092 AM |
1059 | /* Equality and non-equality tests are permitted on anything. |
1060 | Subtraction, and other comparison operators are permitted if | |
1061 | both operands are in the same section. Otherwise, both | |
1062 | operands must be absolute. We already handled the case of | |
1063 | addition or subtraction of a constant above. This will | |
1064 | probably need to be changed for an object file format which | |
1065 | supports arbitrary expressions, such as IEEE-695. | |
1066 | ||
1067 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1068 | otherwise we may get the same message multiple times. */ |
e0890092 AM |
1069 | if (op != O_eq && op != O_ne |
1070 | && (seg_left != absolute_section | |
1071 | || seg_right != absolute_section) | |
1072 | && ((op != O_subtract | |
1073 | && op != O_lt && op != O_le && op != O_ge && op != O_gt) | |
9b4d630b | 1074 | || seg_left != seg_right |
e0890092 AM |
1075 | || (seg_left == undefined_section |
1076 | && add_symbol != op_symbol)) | |
6386f3a7 | 1077 | && finalize_syms) |
252b5132 RH |
1078 | { |
1079 | char *file; | |
1080 | unsigned int line; | |
1081 | ||
1082 | if (expr_symbol_where (symp, &file, &line)) | |
1083 | { | |
1084 | if (seg_left == 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_add_symbol)); |
1088 | if (seg_right == undefined_section) | |
1089 | as_bad_where (file, line, | |
0e389e77 | 1090 | _("undefined symbol `%s' in operation"), |
252b5132 RH |
1091 | S_GET_NAME (symp->sy_value.X_op_symbol)); |
1092 | if (seg_left != undefined_section | |
1093 | && seg_right != undefined_section) | |
7c743825 KH |
1094 | as_bad_where (file, line, |
1095 | _("invalid section for operation")); | |
252b5132 RH |
1096 | } |
1097 | else | |
1098 | { | |
1099 | if (seg_left == undefined_section) | |
0e389e77 | 1100 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), |
252b5132 RH |
1101 | S_GET_NAME (symp->sy_value.X_add_symbol), |
1102 | S_GET_NAME (symp)); | |
1103 | if (seg_right == undefined_section) | |
0e389e77 | 1104 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), |
252b5132 RH |
1105 | S_GET_NAME (symp->sy_value.X_op_symbol), |
1106 | S_GET_NAME (symp)); | |
1107 | if (seg_left != undefined_section | |
1108 | && seg_right != undefined_section) | |
0e389e77 | 1109 | as_bad (_("invalid section for operation setting `%s'"), |
252b5132 RH |
1110 | S_GET_NAME (symp)); |
1111 | } | |
1112 | } | |
1113 | ||
1114 | /* Check for division by zero. */ | |
1115 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1116 | { | |
1117 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1118 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1119 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1120 | { |
1121 | char *file; | |
1122 | unsigned int line; | |
1123 | ||
1124 | if (expr_symbol_where (symp, &file, &line)) | |
1125 | as_bad_where (file, line, _("division by zero")); | |
1126 | else | |
0e389e77 | 1127 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1128 | S_GET_NAME (symp)); |
1129 | } | |
1130 | ||
1131 | right = 1; | |
1132 | } | |
1133 | ||
1134 | switch (symp->sy_value.X_op) | |
1135 | { | |
1136 | case O_multiply: left *= right; break; | |
1137 | case O_divide: left /= right; break; | |
1138 | case O_modulus: left %= right; break; | |
1139 | case O_left_shift: left <<= right; break; | |
1140 | case O_right_shift: left >>= right; break; | |
1141 | case O_bit_inclusive_or: left |= right; break; | |
1142 | case O_bit_or_not: left |= ~right; break; | |
1143 | case O_bit_exclusive_or: left ^= right; break; | |
1144 | case O_bit_and: left &= right; break; | |
1145 | case O_add: left += right; break; | |
1146 | case O_subtract: left -= right; break; | |
e0890092 AM |
1147 | case O_eq: |
1148 | case O_ne: | |
1149 | left = (left == right && seg_left == seg_right | |
1150 | && (seg_left != undefined_section | |
1151 | || add_symbol == op_symbol) | |
1152 | ? ~ (offsetT) 0 : 0); | |
1153 | if (symp->sy_value.X_op == O_ne) | |
1154 | left = ~left; | |
1155 | break; | |
252b5132 RH |
1156 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1157 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1158 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1159 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1160 | case O_logical_and: left = left && right; break; | |
1161 | case O_logical_or: left = left || right; break; | |
1162 | default: abort (); | |
1163 | } | |
1164 | ||
1165 | final_val += symp->sy_frag->fr_address + left; | |
1166 | if (final_seg == expr_section || final_seg == undefined_section) | |
1167 | final_seg = absolute_section; | |
49309057 ILT |
1168 | resolved = (symbol_resolved_p (add_symbol) |
1169 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1170 | break; |
252b5132 RH |
1171 | |
1172 | case O_register: | |
1173 | case O_big: | |
1174 | case O_illegal: | |
1175 | /* Give an error (below) if not in expr_section. We don't | |
1176 | want to worry about expr_section symbols, because they | |
1177 | are fictional (they are created as part of expression | |
1178 | resolution), and any problems may not actually mean | |
1179 | anything. */ | |
1180 | break; | |
1181 | } | |
1182 | ||
1183 | symp->sy_resolving = 0; | |
1184 | } | |
1185 | ||
6386f3a7 | 1186 | if (finalize_syms) |
05bdb37e | 1187 | S_SET_VALUE (symp, final_val); |
252b5132 | 1188 | |
05bdb37e AM |
1189 | exit_dont_set_value: |
1190 | /* Always set the segment, even if not finalizing the value. | |
1191 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1192 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1193 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1194 | for a stab symbol, so we use this bad hack. */ | |
1195 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1196 | #endif |
05bdb37e | 1197 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1198 | |
252b5132 | 1199 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1200 | if (finalize_syms) |
252b5132 RH |
1201 | { |
1202 | if (resolved) | |
1203 | symp->sy_resolved = 1; | |
1204 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1205 | { | |
0e389e77 | 1206 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1207 | S_GET_NAME (symp)); |
252b5132 RH |
1208 | symp->sy_resolved = 1; |
1209 | } | |
1210 | } | |
1211 | ||
1212 | return final_val; | |
1213 | } | |
1214 | ||
49309057 ILT |
1215 | #ifdef BFD_ASSEMBLER |
1216 | ||
1217 | static void resolve_local_symbol PARAMS ((const char *, PTR)); | |
1218 | ||
1219 | /* A static function passed to hash_traverse. */ | |
1220 | ||
1221 | static void | |
1222 | resolve_local_symbol (key, value) | |
ab9da554 | 1223 | const char *key ATTRIBUTE_UNUSED; |
49309057 ILT |
1224 | PTR value; |
1225 | { | |
1226 | if (value != NULL) | |
6386f3a7 | 1227 | resolve_symbol_value (value); |
49309057 ILT |
1228 | } |
1229 | ||
1230 | #endif | |
1231 | ||
1232 | /* Resolve all local symbols. */ | |
1233 | ||
1234 | void | |
1235 | resolve_local_symbol_values () | |
1236 | { | |
1237 | #ifdef BFD_ASSEMBLER | |
1238 | hash_traverse (local_hash, resolve_local_symbol); | |
1239 | #endif | |
1240 | } | |
1241 | ||
252b5132 RH |
1242 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1243 | They are *really* local. That is, they go out of scope whenever we see a | |
1244 | label that isn't local. Also, like fb labels, there can be multiple | |
1245 | instances of a dollar label. Therefor, we name encode each instance with | |
1246 | the instance number, keep a list of defined symbols separate from the real | |
1247 | symbol table, and we treat these buggers as a sparse array. */ | |
1248 | ||
1249 | static long *dollar_labels; | |
1250 | static long *dollar_label_instances; | |
1251 | static char *dollar_label_defines; | |
1252 | static unsigned long dollar_label_count; | |
1253 | static unsigned long dollar_label_max; | |
1254 | ||
7c743825 | 1255 | int |
252b5132 RH |
1256 | dollar_label_defined (label) |
1257 | long label; | |
1258 | { | |
1259 | long *i; | |
1260 | ||
1261 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1262 | ||
1263 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1264 | if (*i == label) | |
1265 | return dollar_label_defines[i - dollar_labels]; | |
1266 | ||
7c743825 | 1267 | /* If we get here, label isn't defined. */ |
252b5132 | 1268 | return 0; |
7c743825 | 1269 | } |
252b5132 RH |
1270 | |
1271 | static long | |
1272 | dollar_label_instance (label) | |
1273 | long label; | |
1274 | { | |
1275 | long *i; | |
1276 | ||
1277 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1278 | ||
1279 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1280 | if (*i == label) | |
1281 | return (dollar_label_instances[i - dollar_labels]); | |
1282 | ||
7c743825 KH |
1283 | /* If we get here, we haven't seen the label before. |
1284 | Therefore its instance count is zero. */ | |
252b5132 RH |
1285 | return 0; |
1286 | } | |
1287 | ||
7c743825 | 1288 | void |
252b5132 RH |
1289 | dollar_label_clear () |
1290 | { | |
1291 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1292 | } | |
1293 | ||
1294 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1295 | ||
7c743825 | 1296 | void |
252b5132 RH |
1297 | define_dollar_label (label) |
1298 | long label; | |
1299 | { | |
1300 | long *i; | |
1301 | ||
1302 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1303 | if (*i == label) | |
1304 | { | |
1305 | ++dollar_label_instances[i - dollar_labels]; | |
1306 | dollar_label_defines[i - dollar_labels] = 1; | |
1307 | return; | |
1308 | } | |
1309 | ||
7c743825 | 1310 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1311 | |
1312 | if (dollar_labels == NULL) | |
1313 | { | |
1314 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1315 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1316 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1317 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1318 | dollar_label_count = 0; | |
1319 | } | |
1320 | else if (dollar_label_count == dollar_label_max) | |
1321 | { | |
1322 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1323 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1324 | dollar_label_max * sizeof (long)); | |
1325 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1326 | dollar_label_max * sizeof (long)); | |
1327 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1328 | } /* if we needed to grow */ |
252b5132 RH |
1329 | |
1330 | dollar_labels[dollar_label_count] = label; | |
1331 | dollar_label_instances[dollar_label_count] = 1; | |
1332 | dollar_label_defines[dollar_label_count] = 1; | |
1333 | ++dollar_label_count; | |
1334 | } | |
1335 | ||
7c743825 KH |
1336 | /* Caller must copy returned name: we re-use the area for the next name. |
1337 | ||
1338 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1339 | where n is the label number and m is the instance number. "L" makes | |
1340 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1341 | ordinary symbol SHOULD get the same name as a local label | |
1342 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1343 | ||
1344 | fb labels get the same treatment, except that ^B is used in place | |
1345 | of ^A. */ | |
1346 | ||
1347 | char * /* Return local label name. */ | |
252b5132 | 1348 | dollar_label_name (n, augend) |
7c743825 KH |
1349 | register long n; /* we just saw "n$:" : n a number. */ |
1350 | register int augend; /* 0 for current instance, 1 for new instance. */ | |
252b5132 RH |
1351 | { |
1352 | long i; | |
7c743825 | 1353 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1354 | static char symbol_name_build[24]; |
1355 | register char *p; | |
1356 | register char *q; | |
7c743825 | 1357 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1358 | |
1359 | know (n >= 0); | |
1360 | know (augend == 0 || augend == 1); | |
1361 | p = symbol_name_build; | |
f84dd1f0 NC |
1362 | #ifdef LOCAL_LABEL_PREFIX |
1363 | *p++ = LOCAL_LABEL_PREFIX; | |
1364 | #endif | |
252b5132 RH |
1365 | *p++ = 'L'; |
1366 | ||
7c743825 KH |
1367 | /* Next code just does sprintf( {}, "%d", n); */ |
1368 | /* Label number. */ | |
252b5132 RH |
1369 | q = symbol_name_temporary; |
1370 | for (*q++ = 0, i = n; i; ++q) | |
1371 | { | |
1372 | *q = i % 10 + '0'; | |
1373 | i /= 10; | |
1374 | } | |
1375 | while ((*p = *--q) != '\0') | |
1376 | ++p; | |
1377 | ||
aa257fcd | 1378 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1379 | |
7c743825 | 1380 | /* Instance number. */ |
252b5132 RH |
1381 | q = symbol_name_temporary; |
1382 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1383 | { | |
1384 | *q = i % 10 + '0'; | |
1385 | i /= 10; | |
1386 | } | |
1387 | while ((*p++ = *--q) != '\0');; | |
1388 | ||
7c743825 | 1389 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1390 | return symbol_name_build; |
1391 | } | |
1392 | ||
7c743825 KH |
1393 | /* Sombody else's idea of local labels. They are made by "n:" where n |
1394 | is any decimal digit. Refer to them with | |
1395 | "nb" for previous (backward) n: | |
1396 | or "nf" for next (forward) n:. | |
1397 | ||
1398 | We do a little better and let n be any number, not just a single digit, but | |
1399 | since the other guy's assembler only does ten, we treat the first ten | |
1400 | specially. | |
1401 | ||
1402 | Like someone else's assembler, we have one set of local label counters for | |
1403 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1404 | implies that one can refer to a label in another segment, and indeed some | |
1405 | crufty compilers have done just that. | |
1406 | ||
1407 | Since there could be a LOT of these things, treat them as a sparse | |
1408 | array. */ | |
252b5132 RH |
1409 | |
1410 | #define FB_LABEL_SPECIAL (10) | |
1411 | ||
1412 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1413 | static long *fb_labels; | |
1414 | static long *fb_label_instances; | |
1415 | static long fb_label_count; | |
1416 | static long fb_label_max; | |
1417 | ||
7c743825 | 1418 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1419 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1420 | ||
7c743825 | 1421 | static void |
252b5132 RH |
1422 | fb_label_init () |
1423 | { | |
1424 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1425 | } |
252b5132 | 1426 | |
7c743825 KH |
1427 | /* Add one to the instance number of this fb label. */ |
1428 | ||
1429 | void | |
252b5132 RH |
1430 | fb_label_instance_inc (label) |
1431 | long label; | |
1432 | { | |
1433 | long *i; | |
1434 | ||
1435 | if (label < FB_LABEL_SPECIAL) | |
1436 | { | |
1437 | ++fb_low_counter[label]; | |
1438 | return; | |
1439 | } | |
1440 | ||
1441 | if (fb_labels != NULL) | |
1442 | { | |
1443 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1444 | i < fb_labels + fb_label_count; ++i) | |
1445 | { | |
1446 | if (*i == label) | |
1447 | { | |
1448 | ++fb_label_instances[i - fb_labels]; | |
1449 | return; | |
7c743825 KH |
1450 | } /* if we find it */ |
1451 | } /* for each existing label */ | |
252b5132 RH |
1452 | } |
1453 | ||
7c743825 | 1454 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1455 | |
1456 | if (fb_labels == NULL) | |
1457 | { | |
1458 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1459 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1460 | fb_label_max = FB_LABEL_BUMP_BY; | |
1461 | fb_label_count = FB_LABEL_SPECIAL; | |
1462 | ||
1463 | } | |
1464 | else if (fb_label_count == fb_label_max) | |
1465 | { | |
1466 | fb_label_max += FB_LABEL_BUMP_BY; | |
1467 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1468 | fb_label_max * sizeof (long)); | |
1469 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1470 | fb_label_max * sizeof (long)); | |
7c743825 | 1471 | } /* if we needed to grow */ |
252b5132 RH |
1472 | |
1473 | fb_labels[fb_label_count] = label; | |
1474 | fb_label_instances[fb_label_count] = 1; | |
1475 | ++fb_label_count; | |
1476 | } | |
1477 | ||
7c743825 | 1478 | static long |
252b5132 RH |
1479 | fb_label_instance (label) |
1480 | long label; | |
1481 | { | |
1482 | long *i; | |
1483 | ||
1484 | if (label < FB_LABEL_SPECIAL) | |
1485 | { | |
1486 | return (fb_low_counter[label]); | |
1487 | } | |
1488 | ||
1489 | if (fb_labels != NULL) | |
1490 | { | |
1491 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1492 | i < fb_labels + fb_label_count; ++i) | |
1493 | { | |
1494 | if (*i == label) | |
1495 | { | |
1496 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1497 | } /* if we find it */ |
1498 | } /* for each existing label */ | |
252b5132 RH |
1499 | } |
1500 | ||
1501 | /* We didn't find the label, so this must be a reference to the | |
1502 | first instance. */ | |
1503 | return 0; | |
1504 | } | |
1505 | ||
7c743825 KH |
1506 | /* Caller must copy returned name: we re-use the area for the next name. |
1507 | ||
1508 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1509 | where n is the label number and m is the instance number. "L" makes | |
1510 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1511 | ordinary symbol SHOULD get the same name as a local label | |
1512 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1513 | ||
1514 | dollar labels get the same treatment, except that ^A is used in | |
1515 | place of ^B. */ | |
1516 | ||
1517 | char * /* Return local label name. */ | |
252b5132 | 1518 | fb_label_name (n, augend) |
7c743825 KH |
1519 | long n; /* We just saw "n:", "nf" or "nb" : n a number. */ |
1520 | long augend; /* 0 for nb, 1 for n:, nf. */ | |
252b5132 RH |
1521 | { |
1522 | long i; | |
7c743825 | 1523 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1524 | static char symbol_name_build[24]; |
1525 | register char *p; | |
1526 | register char *q; | |
7c743825 | 1527 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1528 | |
1529 | know (n >= 0); | |
1530 | know (augend == 0 || augend == 1); | |
1531 | p = symbol_name_build; | |
aa257fcd NC |
1532 | #ifdef LOCAL_LABEL_PREFIX |
1533 | *p++ = LOCAL_LABEL_PREFIX; | |
1534 | #endif | |
252b5132 RH |
1535 | *p++ = 'L'; |
1536 | ||
7c743825 KH |
1537 | /* Next code just does sprintf( {}, "%d", n); */ |
1538 | /* Label number. */ | |
252b5132 RH |
1539 | q = symbol_name_temporary; |
1540 | for (*q++ = 0, i = n; i; ++q) | |
1541 | { | |
1542 | *q = i % 10 + '0'; | |
1543 | i /= 10; | |
1544 | } | |
1545 | while ((*p = *--q) != '\0') | |
1546 | ++p; | |
1547 | ||
aa257fcd | 1548 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1549 | |
7c743825 | 1550 | /* Instance number. */ |
252b5132 RH |
1551 | q = symbol_name_temporary; |
1552 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1553 | { | |
1554 | *q = i % 10 + '0'; | |
1555 | i /= 10; | |
1556 | } | |
1557 | while ((*p++ = *--q) != '\0');; | |
1558 | ||
7c743825 | 1559 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1560 | return (symbol_name_build); |
7c743825 | 1561 | } |
252b5132 | 1562 | |
7c743825 KH |
1563 | /* Decode name that may have been generated by foo_label_name() above. |
1564 | If the name wasn't generated by foo_label_name(), then return it | |
1565 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1566 | |
1567 | char * | |
1568 | decode_local_label_name (s) | |
1569 | char *s; | |
1570 | { | |
1571 | char *p; | |
1572 | char *symbol_decode; | |
1573 | int label_number; | |
1574 | int instance_number; | |
1575 | char *type; | |
d95767bf | 1576 | const char *message_format; |
aa257fcd | 1577 | int index = 0; |
43ad3147 | 1578 | |
aa257fcd NC |
1579 | #ifdef LOCAL_LABEL_PREFIX |
1580 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1581 | ++index; | |
1582 | #endif | |
43ad3147 | 1583 | |
aa257fcd | 1584 | if (s[index] != 'L') |
252b5132 RH |
1585 | return s; |
1586 | ||
aa257fcd | 1587 | for (label_number = 0, p = s + index + 1; isdigit ((unsigned char) *p); ++p) |
252b5132 RH |
1588 | label_number = (10 * label_number) + *p - '0'; |
1589 | ||
aa257fcd | 1590 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1591 | type = "dollar"; |
aa257fcd | 1592 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1593 | type = "fb"; |
1594 | else | |
1595 | return s; | |
1596 | ||
1597 | for (instance_number = 0, p++; isdigit ((unsigned char) *p); ++p) | |
1598 | instance_number = (10 * instance_number) + *p - '0'; | |
1599 | ||
d95767bf | 1600 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1601 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1602 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1603 | ||
1604 | return symbol_decode; | |
1605 | } | |
1606 | ||
1607 | /* Get the value of a symbol. */ | |
1608 | ||
1609 | valueT | |
1610 | S_GET_VALUE (s) | |
1611 | symbolS *s; | |
1612 | { | |
a1605869 | 1613 | #ifdef BFD_ASSEMBLER |
49309057 | 1614 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1615 | return resolve_symbol_value (s); |
a1605869 | 1616 | #endif |
49309057 | 1617 | |
ac62c346 | 1618 | if (!s->sy_resolved) |
e46d99eb | 1619 | { |
6386f3a7 AM |
1620 | valueT val = resolve_symbol_value (s); |
1621 | if (!finalize_syms) | |
e46d99eb AM |
1622 | return val; |
1623 | } | |
252b5132 RH |
1624 | if (s->sy_value.X_op != O_constant) |
1625 | { | |
1626 | static symbolS *recur; | |
1627 | ||
1628 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1629 | may call S_GET_VALUE. We use a static symbol to avoid the | |
1630 | immediate recursion. */ | |
1631 | if (recur == s) | |
1632 | return (valueT) s->sy_value.X_add_number; | |
1633 | recur = s; | |
1634 | if (! s->sy_resolved | |
1635 | || s->sy_value.X_op != O_symbol | |
1636 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1637 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1638 | S_GET_NAME (s)); |
1639 | recur = NULL; | |
1640 | } | |
1641 | return (valueT) s->sy_value.X_add_number; | |
1642 | } | |
1643 | ||
1644 | /* Set the value of a symbol. */ | |
1645 | ||
1646 | void | |
1647 | S_SET_VALUE (s, val) | |
1648 | symbolS *s; | |
1649 | valueT val; | |
1650 | { | |
a1605869 | 1651 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1652 | if (LOCAL_SYMBOL_CHECK (s)) |
1653 | { | |
bd780143 | 1654 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1655 | return; |
1656 | } | |
a1605869 | 1657 | #endif |
49309057 | 1658 | |
252b5132 RH |
1659 | s->sy_value.X_op = O_constant; |
1660 | s->sy_value.X_add_number = (offsetT) val; | |
1661 | s->sy_value.X_unsigned = 0; | |
1662 | } | |
1663 | ||
1664 | void | |
1665 | copy_symbol_attributes (dest, src) | |
1666 | symbolS *dest, *src; | |
1667 | { | |
49309057 | 1668 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1669 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1670 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1671 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1672 | |
252b5132 RH |
1673 | #ifdef BFD_ASSEMBLER |
1674 | /* In an expression, transfer the settings of these flags. | |
1675 | The user can override later, of course. */ | |
1676 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1677 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1678 | #endif | |
1679 | ||
1680 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1681 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1682 | #endif | |
1683 | } | |
1684 | ||
1685 | #ifdef BFD_ASSEMBLER | |
1686 | ||
1687 | int | |
1688 | S_IS_FUNCTION (s) | |
1689 | symbolS *s; | |
1690 | { | |
49309057 ILT |
1691 | flagword flags; |
1692 | ||
1693 | if (LOCAL_SYMBOL_CHECK (s)) | |
1694 | return 0; | |
1695 | ||
1696 | flags = s->bsym->flags; | |
252b5132 RH |
1697 | |
1698 | return (flags & BSF_FUNCTION) != 0; | |
1699 | } | |
1700 | ||
1701 | int | |
1702 | S_IS_EXTERNAL (s) | |
1703 | symbolS *s; | |
1704 | { | |
49309057 ILT |
1705 | flagword flags; |
1706 | ||
1707 | if (LOCAL_SYMBOL_CHECK (s)) | |
1708 | return 0; | |
1709 | ||
1710 | flags = s->bsym->flags; | |
252b5132 | 1711 | |
7c743825 | 1712 | /* Sanity check. */ |
252b5132 RH |
1713 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1714 | abort (); | |
1715 | ||
1716 | return (flags & BSF_GLOBAL) != 0; | |
1717 | } | |
1718 | ||
1719 | int | |
1720 | S_IS_WEAK (s) | |
1721 | symbolS *s; | |
1722 | { | |
49309057 ILT |
1723 | if (LOCAL_SYMBOL_CHECK (s)) |
1724 | return 0; | |
252b5132 RH |
1725 | return (s->bsym->flags & BSF_WEAK) != 0; |
1726 | } | |
1727 | ||
1728 | int | |
1729 | S_IS_COMMON (s) | |
1730 | symbolS *s; | |
1731 | { | |
49309057 ILT |
1732 | if (LOCAL_SYMBOL_CHECK (s)) |
1733 | return 0; | |
252b5132 RH |
1734 | return bfd_is_com_section (s->bsym->section); |
1735 | } | |
1736 | ||
1737 | int | |
1738 | S_IS_DEFINED (s) | |
1739 | symbolS *s; | |
1740 | { | |
49309057 ILT |
1741 | if (LOCAL_SYMBOL_CHECK (s)) |
1742 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1743 | return s->bsym->section != undefined_section; |
1744 | } | |
1745 | ||
1746 | int | |
1747 | S_IS_DEBUG (s) | |
1748 | symbolS *s; | |
1749 | { | |
49309057 ILT |
1750 | if (LOCAL_SYMBOL_CHECK (s)) |
1751 | return 0; | |
252b5132 RH |
1752 | if (s->bsym->flags & BSF_DEBUGGING) |
1753 | return 1; | |
1754 | return 0; | |
1755 | } | |
1756 | ||
1757 | int | |
1758 | S_IS_LOCAL (s) | |
1759 | symbolS *s; | |
1760 | { | |
49309057 | 1761 | flagword flags; |
252b5132 RH |
1762 | const char *name; |
1763 | ||
49309057 ILT |
1764 | if (LOCAL_SYMBOL_CHECK (s)) |
1765 | return 1; | |
1766 | ||
1767 | flags = s->bsym->flags; | |
1768 | ||
7c743825 | 1769 | /* Sanity check. */ |
252b5132 RH |
1770 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1771 | abort (); | |
1772 | ||
1773 | if (bfd_get_section (s->bsym) == reg_section) | |
1774 | return 1; | |
1775 | ||
1776 | if (flag_strip_local_absolute | |
1777 | && (flags & BSF_GLOBAL) == 0 | |
1778 | && bfd_get_section (s->bsym) == absolute_section) | |
1779 | return 1; | |
1780 | ||
1781 | name = S_GET_NAME (s); | |
1782 | return (name != NULL | |
1783 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1784 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1785 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1786 | || (! flag_keep_locals |
1787 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1788 | || (flag_mri | |
1789 | && name[0] == '?' | |
1790 | && name[1] == '?'))))); | |
1791 | } | |
1792 | ||
1793 | int | |
1794 | S_IS_EXTERN (s) | |
1795 | symbolS *s; | |
1796 | { | |
1797 | return S_IS_EXTERNAL (s); | |
1798 | } | |
1799 | ||
1800 | int | |
1801 | S_IS_STABD (s) | |
1802 | symbolS *s; | |
1803 | { | |
1804 | return S_GET_NAME (s) == 0; | |
1805 | } | |
1806 | ||
1807 | CONST char * | |
1808 | S_GET_NAME (s) | |
1809 | symbolS *s; | |
1810 | { | |
49309057 ILT |
1811 | if (LOCAL_SYMBOL_CHECK (s)) |
1812 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1813 | return s->bsym->name; |
1814 | } | |
1815 | ||
1816 | segT | |
1817 | S_GET_SEGMENT (s) | |
1818 | symbolS *s; | |
1819 | { | |
49309057 ILT |
1820 | if (LOCAL_SYMBOL_CHECK (s)) |
1821 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1822 | return s->bsym->section; |
1823 | } | |
1824 | ||
1825 | void | |
1826 | S_SET_SEGMENT (s, seg) | |
1827 | symbolS *s; | |
1828 | segT seg; | |
1829 | { | |
1830 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1831 | faults assigning back to const global symbols such as *ABS*, but it | |
1832 | shouldn't happen anyway. */ | |
1833 | ||
49309057 ILT |
1834 | if (LOCAL_SYMBOL_CHECK (s)) |
1835 | { | |
1836 | if (seg == reg_section) | |
1837 | s = local_symbol_convert ((struct local_symbol *) s); | |
1838 | else | |
1839 | { | |
1840 | ((struct local_symbol *) s)->lsy_section = seg; | |
1841 | return; | |
1842 | } | |
1843 | } | |
1844 | ||
252b5132 RH |
1845 | if (s->bsym->flags & BSF_SECTION_SYM) |
1846 | { | |
1847 | if (s->bsym->section != seg) | |
7c743825 | 1848 | abort (); |
252b5132 RH |
1849 | } |
1850 | else | |
1851 | s->bsym->section = seg; | |
1852 | } | |
1853 | ||
1854 | void | |
1855 | S_SET_EXTERNAL (s) | |
1856 | symbolS *s; | |
1857 | { | |
49309057 ILT |
1858 | if (LOCAL_SYMBOL_CHECK (s)) |
1859 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1860 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1861 | { | |
1862 | /* Let .weak override .global. */ | |
1863 | return; | |
1864 | } | |
4d7c34bf NC |
1865 | if (s->bsym->flags & BSF_SECTION_SYM) |
1866 | { | |
1867 | char * file; | |
1868 | unsigned int line; | |
1869 | ||
1870 | /* Do not reassign section symbols. */ | |
1871 | as_where (& file, & line); | |
1872 | as_warn_where (file, line, | |
0e389e77 | 1873 | _("section symbols are already global")); |
4d7c34bf NC |
1874 | return; |
1875 | } | |
252b5132 | 1876 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1877 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
252b5132 RH |
1878 | } |
1879 | ||
1880 | void | |
1881 | S_CLEAR_EXTERNAL (s) | |
1882 | symbolS *s; | |
1883 | { | |
49309057 ILT |
1884 | if (LOCAL_SYMBOL_CHECK (s)) |
1885 | return; | |
252b5132 RH |
1886 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1887 | { | |
1888 | /* Let .weak override. */ | |
1889 | return; | |
1890 | } | |
1891 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1892 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1893 | } |
1894 | ||
1895 | void | |
1896 | S_SET_WEAK (s) | |
1897 | symbolS *s; | |
1898 | { | |
49309057 ILT |
1899 | if (LOCAL_SYMBOL_CHECK (s)) |
1900 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1901 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1902 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1903 | } |
1904 | ||
1905 | void | |
1906 | S_SET_NAME (s, name) | |
1907 | symbolS *s; | |
1908 | char *name; | |
1909 | { | |
49309057 ILT |
1910 | if (LOCAL_SYMBOL_CHECK (s)) |
1911 | { | |
1912 | ((struct local_symbol *) s)->lsy_name = name; | |
1913 | return; | |
1914 | } | |
252b5132 RH |
1915 | s->bsym->name = name; |
1916 | } | |
1917 | #endif /* BFD_ASSEMBLER */ | |
1918 | ||
49309057 ILT |
1919 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
1920 | ||
1921 | /* Return the previous symbol in a chain. */ | |
1922 | ||
1923 | symbolS * | |
1924 | symbol_previous (s) | |
1925 | symbolS *s; | |
1926 | { | |
1927 | if (LOCAL_SYMBOL_CHECK (s)) | |
1928 | abort (); | |
1929 | return s->sy_previous; | |
1930 | } | |
1931 | ||
1932 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
1933 | ||
1934 | /* Return the next symbol in a chain. */ | |
1935 | ||
1936 | symbolS * | |
1937 | symbol_next (s) | |
1938 | symbolS *s; | |
1939 | { | |
1940 | if (LOCAL_SYMBOL_CHECK (s)) | |
1941 | abort (); | |
1942 | return s->sy_next; | |
1943 | } | |
1944 | ||
1945 | /* Return a pointer to the value of a symbol as an expression. */ | |
1946 | ||
1947 | expressionS * | |
1948 | symbol_get_value_expression (s) | |
1949 | symbolS *s; | |
1950 | { | |
1951 | if (LOCAL_SYMBOL_CHECK (s)) | |
1952 | s = local_symbol_convert ((struct local_symbol *) s); | |
1953 | return &s->sy_value; | |
1954 | } | |
1955 | ||
1956 | /* Set the value of a symbol to an expression. */ | |
1957 | ||
1958 | void | |
1959 | symbol_set_value_expression (s, exp) | |
1960 | symbolS *s; | |
1961 | const expressionS *exp; | |
1962 | { | |
1963 | if (LOCAL_SYMBOL_CHECK (s)) | |
1964 | s = local_symbol_convert ((struct local_symbol *) s); | |
1965 | s->sy_value = *exp; | |
1966 | } | |
1967 | ||
1968 | /* Set the frag of a symbol. */ | |
1969 | ||
1970 | void | |
1971 | symbol_set_frag (s, f) | |
1972 | symbolS *s; | |
1973 | fragS *f; | |
1974 | { | |
a1605869 | 1975 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1976 | if (LOCAL_SYMBOL_CHECK (s)) |
1977 | { | |
1978 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
1979 | return; | |
1980 | } | |
a1605869 | 1981 | #endif |
49309057 ILT |
1982 | s->sy_frag = f; |
1983 | } | |
1984 | ||
1985 | /* Return the frag of a symbol. */ | |
1986 | ||
1987 | fragS * | |
1988 | symbol_get_frag (s) | |
1989 | symbolS *s; | |
1990 | { | |
a1605869 | 1991 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1992 | if (LOCAL_SYMBOL_CHECK (s)) |
1993 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 1994 | #endif |
49309057 ILT |
1995 | return s->sy_frag; |
1996 | } | |
1997 | ||
1998 | /* Mark a symbol as having been used. */ | |
1999 | ||
2000 | void | |
2001 | symbol_mark_used (s) | |
2002 | symbolS *s; | |
2003 | { | |
2004 | if (LOCAL_SYMBOL_CHECK (s)) | |
2005 | return; | |
2006 | s->sy_used = 1; | |
2007 | } | |
2008 | ||
2009 | /* Clear the mark of whether a symbol has been used. */ | |
2010 | ||
2011 | void | |
2012 | symbol_clear_used (s) | |
2013 | symbolS *s; | |
2014 | { | |
2015 | if (LOCAL_SYMBOL_CHECK (s)) | |
2016 | s = local_symbol_convert ((struct local_symbol *) s); | |
2017 | s->sy_used = 0; | |
2018 | } | |
2019 | ||
2020 | /* Return whether a symbol has been used. */ | |
2021 | ||
2022 | int | |
2023 | symbol_used_p (s) | |
2024 | symbolS *s; | |
2025 | { | |
2026 | if (LOCAL_SYMBOL_CHECK (s)) | |
2027 | return 1; | |
2028 | return s->sy_used; | |
2029 | } | |
2030 | ||
2031 | /* Mark a symbol as having been used in a reloc. */ | |
2032 | ||
2033 | void | |
2034 | symbol_mark_used_in_reloc (s) | |
2035 | symbolS *s; | |
2036 | { | |
2037 | if (LOCAL_SYMBOL_CHECK (s)) | |
2038 | s = local_symbol_convert ((struct local_symbol *) s); | |
2039 | s->sy_used_in_reloc = 1; | |
2040 | } | |
2041 | ||
2042 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2043 | ||
2044 | void | |
2045 | symbol_clear_used_in_reloc (s) | |
2046 | symbolS *s; | |
2047 | { | |
2048 | if (LOCAL_SYMBOL_CHECK (s)) | |
2049 | return; | |
2050 | s->sy_used_in_reloc = 0; | |
2051 | } | |
2052 | ||
2053 | /* Return whether a symbol has been used in a reloc. */ | |
2054 | ||
2055 | int | |
2056 | symbol_used_in_reloc_p (s) | |
2057 | symbolS *s; | |
2058 | { | |
2059 | if (LOCAL_SYMBOL_CHECK (s)) | |
2060 | return 0; | |
2061 | return s->sy_used_in_reloc; | |
2062 | } | |
2063 | ||
2064 | /* Mark a symbol as an MRI common symbol. */ | |
2065 | ||
2066 | void | |
2067 | symbol_mark_mri_common (s) | |
2068 | symbolS *s; | |
2069 | { | |
2070 | if (LOCAL_SYMBOL_CHECK (s)) | |
2071 | s = local_symbol_convert ((struct local_symbol *) s); | |
2072 | s->sy_mri_common = 1; | |
2073 | } | |
2074 | ||
2075 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2076 | ||
2077 | void | |
2078 | symbol_clear_mri_common (s) | |
2079 | symbolS *s; | |
2080 | { | |
2081 | if (LOCAL_SYMBOL_CHECK (s)) | |
2082 | return; | |
2083 | s->sy_mri_common = 0; | |
2084 | } | |
2085 | ||
2086 | /* Return whether a symbol is an MRI common symbol. */ | |
2087 | ||
2088 | int | |
2089 | symbol_mri_common_p (s) | |
2090 | symbolS *s; | |
2091 | { | |
2092 | if (LOCAL_SYMBOL_CHECK (s)) | |
2093 | return 0; | |
2094 | return s->sy_mri_common; | |
2095 | } | |
2096 | ||
2097 | /* Mark a symbol as having been written. */ | |
2098 | ||
2099 | void | |
2100 | symbol_mark_written (s) | |
2101 | symbolS *s; | |
2102 | { | |
2103 | if (LOCAL_SYMBOL_CHECK (s)) | |
2104 | return; | |
2105 | s->written = 1; | |
2106 | } | |
2107 | ||
2108 | /* Clear the mark of whether a symbol has been written. */ | |
2109 | ||
2110 | void | |
2111 | symbol_clear_written (s) | |
2112 | symbolS *s; | |
2113 | { | |
2114 | if (LOCAL_SYMBOL_CHECK (s)) | |
2115 | return; | |
2116 | s->written = 0; | |
2117 | } | |
2118 | ||
2119 | /* Return whether a symbol has been written. */ | |
2120 | ||
2121 | int | |
2122 | symbol_written_p (s) | |
2123 | symbolS *s; | |
2124 | { | |
2125 | if (LOCAL_SYMBOL_CHECK (s)) | |
2126 | return 0; | |
2127 | return s->written; | |
2128 | } | |
2129 | ||
2130 | /* Mark a symbol has having been resolved. */ | |
2131 | ||
2132 | void | |
2133 | symbol_mark_resolved (s) | |
2134 | symbolS *s; | |
2135 | { | |
a1605869 | 2136 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2137 | if (LOCAL_SYMBOL_CHECK (s)) |
2138 | { | |
2139 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2140 | return; | |
2141 | } | |
a1605869 | 2142 | #endif |
49309057 ILT |
2143 | s->sy_resolved = 1; |
2144 | } | |
2145 | ||
2146 | /* Return whether a symbol has been resolved. */ | |
2147 | ||
2148 | int | |
2149 | symbol_resolved_p (s) | |
2150 | symbolS *s; | |
2151 | { | |
a1605869 | 2152 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2153 | if (LOCAL_SYMBOL_CHECK (s)) |
2154 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2155 | #endif |
49309057 ILT |
2156 | return s->sy_resolved; |
2157 | } | |
2158 | ||
2159 | /* Return whether a symbol is a section symbol. */ | |
2160 | ||
2161 | int | |
2162 | symbol_section_p (s) | |
a04b544b | 2163 | symbolS *s ATTRIBUTE_UNUSED; |
49309057 ILT |
2164 | { |
2165 | if (LOCAL_SYMBOL_CHECK (s)) | |
2166 | return 0; | |
2167 | #ifdef BFD_ASSEMBLER | |
2168 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2169 | #else | |
7c743825 | 2170 | /* FIXME. */ |
49309057 ILT |
2171 | return 0; |
2172 | #endif | |
2173 | } | |
2174 | ||
2175 | /* Return whether a symbol is equated to another symbol. */ | |
2176 | ||
2177 | int | |
2178 | symbol_equated_p (s) | |
2179 | symbolS *s; | |
2180 | { | |
2181 | if (LOCAL_SYMBOL_CHECK (s)) | |
2182 | return 0; | |
2183 | return s->sy_value.X_op == O_symbol; | |
2184 | } | |
2185 | ||
e0890092 AM |
2186 | /* Return whether a symbol is equated to another symbol, and should be |
2187 | treated specially when writing out relocs. */ | |
2188 | ||
2189 | int | |
2190 | symbol_equated_reloc_p (s) | |
2191 | symbolS *s; | |
2192 | { | |
2193 | if (LOCAL_SYMBOL_CHECK (s)) | |
2194 | return 0; | |
2195 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2196 | resolve_symbol_value to flag expression syms that have been | |
2197 | equated. */ | |
2198 | return (s->sy_value.X_op == O_symbol | |
2199 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) | |
2200 | || ! S_IS_DEFINED (s) | |
2201 | || S_IS_COMMON (s))); | |
2202 | } | |
2203 | ||
49309057 ILT |
2204 | /* Return whether a symbol has a constant value. */ |
2205 | ||
2206 | int | |
2207 | symbol_constant_p (s) | |
2208 | symbolS *s; | |
2209 | { | |
2210 | if (LOCAL_SYMBOL_CHECK (s)) | |
2211 | return 1; | |
2212 | return s->sy_value.X_op == O_constant; | |
2213 | } | |
2214 | ||
2215 | #ifdef BFD_ASSEMBLER | |
2216 | ||
2217 | /* Return the BFD symbol for a symbol. */ | |
2218 | ||
2219 | asymbol * | |
2220 | symbol_get_bfdsym (s) | |
2221 | symbolS *s; | |
2222 | { | |
2223 | if (LOCAL_SYMBOL_CHECK (s)) | |
2224 | s = local_symbol_convert ((struct local_symbol *) s); | |
2225 | return s->bsym; | |
2226 | } | |
2227 | ||
2228 | /* Set the BFD symbol for a symbol. */ | |
2229 | ||
2230 | void | |
2231 | symbol_set_bfdsym (s, bsym) | |
2232 | symbolS *s; | |
2233 | asymbol *bsym; | |
2234 | { | |
2235 | if (LOCAL_SYMBOL_CHECK (s)) | |
2236 | s = local_symbol_convert ((struct local_symbol *) s); | |
2237 | s->bsym = bsym; | |
2238 | } | |
2239 | ||
2240 | #endif /* BFD_ASSEMBLER */ | |
2241 | ||
2242 | #ifdef OBJ_SYMFIELD_TYPE | |
2243 | ||
2244 | /* Get a pointer to the object format information for a symbol. */ | |
2245 | ||
2246 | OBJ_SYMFIELD_TYPE * | |
2247 | symbol_get_obj (s) | |
2248 | symbolS *s; | |
2249 | { | |
2250 | if (LOCAL_SYMBOL_CHECK (s)) | |
2251 | s = local_symbol_convert ((struct local_symbol *) s); | |
2252 | return &s->sy_obj; | |
2253 | } | |
2254 | ||
2255 | /* Set the object format information for a symbol. */ | |
2256 | ||
2257 | void | |
2258 | symbol_set_obj (s, o) | |
2259 | symbolS *s; | |
2260 | OBJ_SYMFIELD_TYPE *o; | |
2261 | { | |
2262 | if (LOCAL_SYMBOL_CHECK (s)) | |
2263 | s = local_symbol_convert ((struct local_symbol *) s); | |
2264 | s->sy_obj = *o; | |
2265 | } | |
2266 | ||
2267 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2268 | ||
2269 | #ifdef TC_SYMFIELD_TYPE | |
2270 | ||
2271 | /* Get a pointer to the processor information for a symbol. */ | |
2272 | ||
2273 | TC_SYMFIELD_TYPE * | |
2274 | symbol_get_tc (s) | |
2275 | symbolS *s; | |
2276 | { | |
2277 | if (LOCAL_SYMBOL_CHECK (s)) | |
2278 | s = local_symbol_convert ((struct local_symbol *) s); | |
2279 | return &s->sy_tc; | |
2280 | } | |
2281 | ||
2282 | /* Set the processor information for a symbol. */ | |
2283 | ||
2284 | void | |
bf27257e | 2285 | symbol_set_tc (s, o) |
49309057 ILT |
2286 | symbolS *s; |
2287 | TC_SYMFIELD_TYPE *o; | |
2288 | { | |
2289 | if (LOCAL_SYMBOL_CHECK (s)) | |
2290 | s = local_symbol_convert ((struct local_symbol *) s); | |
2291 | s->sy_tc = *o; | |
2292 | } | |
2293 | ||
2294 | #endif /* TC_SYMFIELD_TYPE */ | |
2295 | ||
252b5132 RH |
2296 | void |
2297 | symbol_begin () | |
2298 | { | |
2299 | symbol_lastP = NULL; | |
7c743825 | 2300 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2301 | sy_hash = hash_new (); |
49309057 ILT |
2302 | #ifdef BFD_ASSEMBLER |
2303 | local_hash = hash_new (); | |
2304 | #endif | |
252b5132 RH |
2305 | |
2306 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2307 | #ifdef BFD_ASSEMBLER | |
2308 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2309 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2310 | #endif | |
2311 | #else | |
7c743825 | 2312 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2313 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2314 | #endif | |
2315 | abs_symbol.sy_value.X_op = O_constant; | |
2316 | abs_symbol.sy_frag = &zero_address_frag; | |
2317 | ||
2318 | if (LOCAL_LABELS_FB) | |
2319 | fb_label_init (); | |
2320 | } | |
252b5132 RH |
2321 | \f |
2322 | int indent_level; | |
2323 | ||
2324 | /* Maximum indent level. | |
2325 | Available for modification inside a gdb session. */ | |
2326 | int max_indent_level = 8; | |
2327 | ||
2328 | #if 0 | |
2329 | ||
2330 | static void | |
2331 | indent () | |
2332 | { | |
2333 | printf ("%*s", indent_level * 4, ""); | |
2334 | } | |
2335 | ||
2336 | #endif | |
2337 | ||
2338 | void | |
2339 | print_symbol_value_1 (file, sym) | |
2340 | FILE *file; | |
2341 | symbolS *sym; | |
2342 | { | |
2343 | const char *name = S_GET_NAME (sym); | |
2344 | if (!name || !name[0]) | |
2345 | name = "(unnamed)"; | |
2346 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2347 | |
2348 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2349 | { | |
a1605869 | 2350 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2351 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2352 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2353 | && local_symbol_get_frag (locsym) != NULL) | |
2354 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2355 | if (local_symbol_resolved_p (locsym)) | |
2356 | fprintf (file, " resolved"); | |
2357 | fprintf (file, " local"); | |
a1605869 | 2358 | #endif |
49309057 ILT |
2359 | } |
2360 | else | |
2361 | { | |
2362 | if (sym->sy_frag != &zero_address_frag) | |
2363 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2364 | if (sym->written) | |
2365 | fprintf (file, " written"); | |
2366 | if (sym->sy_resolved) | |
2367 | fprintf (file, " resolved"); | |
2368 | else if (sym->sy_resolving) | |
2369 | fprintf (file, " resolving"); | |
2370 | if (sym->sy_used_in_reloc) | |
2371 | fprintf (file, " used-in-reloc"); | |
2372 | if (sym->sy_used) | |
2373 | fprintf (file, " used"); | |
2374 | if (S_IS_LOCAL (sym)) | |
2375 | fprintf (file, " local"); | |
2376 | if (S_IS_EXTERN (sym)) | |
2377 | fprintf (file, " extern"); | |
2378 | if (S_IS_DEBUG (sym)) | |
2379 | fprintf (file, " debug"); | |
2380 | if (S_IS_DEFINED (sym)) | |
2381 | fprintf (file, " defined"); | |
2382 | } | |
252b5132 | 2383 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2384 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2385 | { |
2386 | segT s = S_GET_SEGMENT (sym); | |
2387 | ||
2388 | if (s != undefined_section | |
2389 | && s != expr_section) | |
2390 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); | |
2391 | } | |
2392 | else if (indent_level < max_indent_level | |
2393 | && S_GET_SEGMENT (sym) != undefined_section) | |
2394 | { | |
2395 | indent_level++; | |
2396 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2397 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2398 | if (LOCAL_SYMBOL_CHECK (sym)) |
2399 | fprintf (file, "constant %lx", | |
bd780143 | 2400 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2401 | else |
a1605869 | 2402 | #endif |
49309057 | 2403 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2404 | fprintf (file, ">"); |
2405 | indent_level--; | |
2406 | } | |
2407 | fflush (file); | |
2408 | } | |
2409 | ||
2410 | void | |
2411 | print_symbol_value (sym) | |
2412 | symbolS *sym; | |
2413 | { | |
2414 | indent_level = 0; | |
2415 | print_symbol_value_1 (stderr, sym); | |
2416 | fprintf (stderr, "\n"); | |
2417 | } | |
2418 | ||
2419 | static void | |
2420 | print_binary (file, name, exp) | |
2421 | FILE *file; | |
7c743825 | 2422 | const char *name; |
252b5132 RH |
2423 | expressionS *exp; |
2424 | { | |
2425 | indent_level++; | |
2426 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2427 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2428 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2429 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2430 | fprintf (file, ">"); | |
2431 | indent_level--; | |
2432 | } | |
2433 | ||
2434 | void | |
2435 | print_expr_1 (file, exp) | |
2436 | FILE *file; | |
2437 | expressionS *exp; | |
2438 | { | |
2439 | fprintf (file, "expr %lx ", (long) exp); | |
2440 | switch (exp->X_op) | |
2441 | { | |
2442 | case O_illegal: | |
2443 | fprintf (file, "illegal"); | |
2444 | break; | |
2445 | case O_absent: | |
2446 | fprintf (file, "absent"); | |
2447 | break; | |
2448 | case O_constant: | |
2449 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2450 | break; | |
2451 | case O_symbol: | |
2452 | indent_level++; | |
2453 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2454 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2455 | fprintf (file, ">"); | |
2456 | maybe_print_addnum: | |
2457 | if (exp->X_add_number) | |
2458 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2459 | (long) exp->X_add_number); | |
2460 | indent_level--; | |
2461 | break; | |
2462 | case O_register: | |
2463 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2464 | break; | |
2465 | case O_big: | |
2466 | fprintf (file, "big"); | |
2467 | break; | |
2468 | case O_uminus: | |
2469 | fprintf (file, "uminus -<"); | |
2470 | indent_level++; | |
2471 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2472 | fprintf (file, ">"); | |
2473 | goto maybe_print_addnum; | |
2474 | case O_bit_not: | |
2475 | fprintf (file, "bit_not"); | |
2476 | break; | |
2477 | case O_multiply: | |
2478 | print_binary (file, "multiply", exp); | |
2479 | break; | |
2480 | case O_divide: | |
2481 | print_binary (file, "divide", exp); | |
2482 | break; | |
2483 | case O_modulus: | |
2484 | print_binary (file, "modulus", exp); | |
2485 | break; | |
2486 | case O_left_shift: | |
2487 | print_binary (file, "lshift", exp); | |
2488 | break; | |
2489 | case O_right_shift: | |
2490 | print_binary (file, "rshift", exp); | |
2491 | break; | |
2492 | case O_bit_inclusive_or: | |
2493 | print_binary (file, "bit_ior", exp); | |
2494 | break; | |
2495 | case O_bit_exclusive_or: | |
2496 | print_binary (file, "bit_xor", exp); | |
2497 | break; | |
2498 | case O_bit_and: | |
2499 | print_binary (file, "bit_and", exp); | |
2500 | break; | |
2501 | case O_eq: | |
2502 | print_binary (file, "eq", exp); | |
2503 | break; | |
2504 | case O_ne: | |
2505 | print_binary (file, "ne", exp); | |
2506 | break; | |
2507 | case O_lt: | |
2508 | print_binary (file, "lt", exp); | |
2509 | break; | |
2510 | case O_le: | |
2511 | print_binary (file, "le", exp); | |
2512 | break; | |
2513 | case O_ge: | |
2514 | print_binary (file, "ge", exp); | |
2515 | break; | |
2516 | case O_gt: | |
2517 | print_binary (file, "gt", exp); | |
2518 | break; | |
2519 | case O_logical_and: | |
2520 | print_binary (file, "logical_and", exp); | |
2521 | break; | |
2522 | case O_logical_or: | |
2523 | print_binary (file, "logical_or", exp); | |
2524 | break; | |
2525 | case O_add: | |
2526 | indent_level++; | |
2527 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2528 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2529 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2530 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2531 | fprintf (file, ">"); | |
2532 | goto maybe_print_addnum; | |
2533 | case O_subtract: | |
2534 | indent_level++; | |
2535 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2536 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2537 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2538 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2539 | fprintf (file, ">"); | |
2540 | goto maybe_print_addnum; | |
2541 | default: | |
2542 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2543 | break; | |
2544 | } | |
2545 | fflush (stdout); | |
2546 | } | |
2547 | ||
2548 | void | |
2549 | print_expr (exp) | |
2550 | expressionS *exp; | |
2551 | { | |
2552 | print_expr_1 (stderr, exp); | |
2553 | fprintf (stderr, "\n"); | |
2554 | } | |
2555 | ||
2556 | void | |
2557 | symbol_print_statistics (file) | |
2558 | FILE *file; | |
2559 | { | |
2560 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2561 | #ifdef BFD_ASSEMBLER |
2562 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2563 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2564 | local_symbol_count, local_symbol_conversion_count); | |
2565 | #endif | |
252b5132 | 2566 | } |