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 *)); | |
0909233e | 69 | static void report_op_error PARAMS ((symbolS *, symbolS *, symbolS *)); |
252b5132 | 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 | { | |
3882b010 | 127 | char *s; |
252b5132 | 128 | |
3882b010 L |
129 | for (s = ret; *s != '\0'; s++) |
130 | *s = TOUPPER (*s); | |
252b5132 RH |
131 | } |
132 | ||
49309057 ILT |
133 | return ret; |
134 | } | |
135 | ||
136 | symbolS * | |
137 | symbol_create (name, segment, valu, frag) | |
7c743825 KH |
138 | const char *name; /* It is copied, the caller can destroy/modify. */ |
139 | segT segment; /* Segment identifier (SEG_<something>). */ | |
140 | valueT valu; /* Symbol value. */ | |
141 | fragS *frag; /* Associated fragment. */ | |
49309057 ILT |
142 | { |
143 | char *preserved_copy_of_name; | |
144 | symbolS *symbolP; | |
145 | ||
146 | preserved_copy_of_name = save_symbol_name (name); | |
147 | ||
252b5132 RH |
148 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
149 | ||
7c743825 | 150 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
151 | memset (symbolP, 0, sizeof (symbolS)); |
152 | ||
153 | #ifdef BFD_ASSEMBLER | |
154 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); | |
155 | if (symbolP->bsym == NULL) | |
156 | as_perror ("%s", "bfd_make_empty_symbol"); | |
157 | symbolP->bsym->udata.p = (PTR) symbolP; | |
158 | #endif | |
159 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
160 | ||
161 | S_SET_SEGMENT (symbolP, segment); | |
162 | S_SET_VALUE (symbolP, valu); | |
163 | symbol_clear_list_pointers (symbolP); | |
164 | ||
165 | symbolP->sy_frag = frag; | |
166 | #ifndef BFD_ASSEMBLER | |
167 | symbolP->sy_number = ~0; | |
168 | symbolP->sy_name_offset = (unsigned int) ~0; | |
169 | #endif | |
170 | ||
171 | obj_symbol_new_hook (symbolP); | |
172 | ||
173 | #ifdef tc_symbol_new_hook | |
174 | tc_symbol_new_hook (symbolP); | |
175 | #endif | |
176 | ||
177 | return symbolP; | |
178 | } | |
179 | \f | |
49309057 ILT |
180 | #ifdef BFD_ASSEMBLER |
181 | ||
182 | /* Local symbol support. If we can get away with it, we keep only a | |
183 | small amount of information for local symbols. */ | |
184 | ||
185 | static struct local_symbol *local_symbol_make PARAMS ((const char *, segT, | |
186 | valueT, fragS *)); | |
187 | static symbolS *local_symbol_convert PARAMS ((struct local_symbol *)); | |
188 | ||
189 | /* Used for statistics. */ | |
190 | ||
191 | static unsigned long local_symbol_count; | |
192 | static unsigned long local_symbol_conversion_count; | |
193 | ||
194 | /* This macro is called with a symbol argument passed by reference. | |
195 | It returns whether this is a local symbol. If necessary, it | |
196 | changes its argument to the real symbol. */ | |
197 | ||
198 | #define LOCAL_SYMBOL_CHECK(s) \ | |
199 | (s->bsym == NULL \ | |
200 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
201 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
202 | 0) \ | |
203 | : 1) \ | |
204 | : 0) | |
205 | ||
206 | /* Create a local symbol and insert it into the local hash table. */ | |
207 | ||
208 | static struct local_symbol * | |
bd780143 | 209 | local_symbol_make (name, section, value, frag) |
49309057 ILT |
210 | const char *name; |
211 | segT section; | |
bd780143 | 212 | valueT value; |
49309057 ILT |
213 | fragS *frag; |
214 | { | |
215 | char *name_copy; | |
216 | struct local_symbol *ret; | |
217 | ||
218 | ++local_symbol_count; | |
219 | ||
220 | name_copy = save_symbol_name (name); | |
221 | ||
222 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
223 | ret->lsy_marker = NULL; | |
224 | ret->lsy_name = name_copy; | |
225 | ret->lsy_section = section; | |
226 | local_symbol_set_frag (ret, frag); | |
bd780143 | 227 | ret->lsy_value = value; |
49309057 ILT |
228 | |
229 | hash_jam (local_hash, name_copy, (PTR) ret); | |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
234 | /* Convert a local symbol into a real symbol. Note that we do not | |
235 | reclaim the space used by the local symbol. */ | |
236 | ||
237 | static symbolS * | |
238 | local_symbol_convert (locsym) | |
239 | struct local_symbol *locsym; | |
240 | { | |
241 | symbolS *ret; | |
242 | ||
243 | assert (locsym->lsy_marker == NULL); | |
244 | if (local_symbol_converted_p (locsym)) | |
245 | return local_symbol_get_real_symbol (locsym); | |
246 | ||
247 | ++local_symbol_conversion_count; | |
248 | ||
bd780143 | 249 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
250 | local_symbol_get_frag (locsym)); |
251 | ||
252 | if (local_symbol_resolved_p (locsym)) | |
253 | ret->sy_resolved = 1; | |
254 | ||
255 | /* Local symbols are always either defined or used. */ | |
256 | ret->sy_used = 1; | |
257 | ||
8c5e1ccd AO |
258 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
259 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
260 | #endif | |
261 | ||
49309057 ILT |
262 | symbol_table_insert (ret); |
263 | ||
264 | local_symbol_mark_converted (locsym); | |
265 | local_symbol_set_real_symbol (locsym, ret); | |
266 | ||
267 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
268 | ||
269 | return ret; | |
270 | } | |
271 | ||
272 | #else /* ! BFD_ASSEMBLER */ | |
273 | ||
274 | #define LOCAL_SYMBOL_CHECK(s) 0 | |
275 | #define local_symbol_convert(s) ((symbolS *) s) | |
276 | ||
277 | #endif /* ! BFD_ASSEMBLER */ | |
278 | \f | |
7c743825 KH |
279 | /* We have just seen "<name>:". |
280 | Creates a struct symbol unless it already exists. | |
281 | ||
282 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 283 | |
252b5132 | 284 | symbolS * |
7c743825 KH |
285 | colon (sym_name) /* Just seen "x:" - rattle symbols & frags. */ |
286 | const char *sym_name; /* Symbol name, as a cannonical string. */ | |
287 | /* We copy this string: OK to alter later. */ | |
252b5132 | 288 | { |
7c743825 | 289 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 290 | |
7cf10893 | 291 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 RH |
292 | defined. */ |
293 | if (LOCAL_LABELS_DOLLAR) | |
294 | { | |
295 | int local; | |
296 | ||
297 | #ifdef BFD_ASSEMBLER | |
298 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
299 | #else | |
300 | local = LOCAL_LABEL (sym_name); | |
301 | #endif | |
302 | ||
303 | if (! local) | |
304 | dollar_label_clear (); | |
305 | } | |
306 | ||
307 | #ifndef WORKING_DOT_WORD | |
308 | if (new_broken_words) | |
309 | { | |
310 | struct broken_word *a; | |
311 | int possible_bytes; | |
312 | fragS *frag_tmp; | |
313 | char *frag_opcode; | |
314 | ||
315 | extern const int md_short_jump_size; | |
316 | extern const int md_long_jump_size; | |
7cf10893 NC |
317 | |
318 | if (now_seg == absolute_section) | |
319 | { | |
320 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
321 | return NULL; | |
322 | } | |
323 | ||
252b5132 RH |
324 | possible_bytes = (md_short_jump_size |
325 | + new_broken_words * md_long_jump_size); | |
326 | ||
327 | frag_tmp = frag_now; | |
328 | frag_opcode = frag_var (rs_broken_word, | |
329 | possible_bytes, | |
330 | possible_bytes, | |
331 | (relax_substateT) 0, | |
332 | (symbolS *) broken_words, | |
333 | (offsetT) 0, | |
334 | NULL); | |
335 | ||
7c743825 KH |
336 | /* We want to store the pointer to where to insert the jump |
337 | table in the fr_opcode of the rs_broken_word frag. This | |
338 | requires a little hackery. */ | |
252b5132 RH |
339 | while (frag_tmp |
340 | && (frag_tmp->fr_type != rs_broken_word | |
341 | || frag_tmp->fr_opcode)) | |
342 | frag_tmp = frag_tmp->fr_next; | |
343 | know (frag_tmp); | |
344 | frag_tmp->fr_opcode = frag_opcode; | |
345 | new_broken_words = 0; | |
346 | ||
347 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
348 | a->dispfrag = frag_tmp; | |
349 | } | |
350 | #endif /* WORKING_DOT_WORD */ | |
351 | ||
352 | if ((symbolP = symbol_find (sym_name)) != 0) | |
353 | { | |
354 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
355 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
356 | return symbolP; | |
357 | #endif | |
7c743825 | 358 | /* Now check for undefined symbols. */ |
49309057 ILT |
359 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
360 | { | |
a1605869 | 361 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
362 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
363 | ||
364 | if (locsym->lsy_section != undefined_section | |
365 | && (local_symbol_get_frag (locsym) != frag_now | |
366 | || locsym->lsy_section != now_seg | |
bd780143 | 367 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 368 | { |
0e389e77 | 369 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
370 | return symbolP; |
371 | } | |
372 | ||
373 | locsym->lsy_section = now_seg; | |
374 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 375 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 376 | #endif |
49309057 ILT |
377 | } |
378 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
379 | { |
380 | if (S_GET_VALUE (symbolP) == 0) | |
381 | { | |
382 | symbolP->sy_frag = frag_now; | |
383 | #ifdef OBJ_VMS | |
7c743825 | 384 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
385 | #endif |
386 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
387 | S_SET_SEGMENT (symbolP, now_seg); | |
388 | #ifdef N_UNDF | |
389 | know (N_UNDF == 0); | |
7c743825 | 390 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
391 | |
392 | } | |
393 | else | |
394 | { | |
7c743825 KH |
395 | /* There are still several cases to check: |
396 | ||
397 | A .comm/.lcomm symbol being redefined as initialized | |
398 | data is OK | |
399 | ||
400 | A .comm/.lcomm symbol being redefined with a larger | |
401 | size is also OK | |
402 | ||
403 | This only used to be allowed on VMS gas, but Sun cc | |
404 | on the sparc also depends on it. */ | |
252b5132 RH |
405 | |
406 | if (((!S_IS_DEBUG (symbolP) | |
407 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
408 | && S_IS_EXTERNAL (symbolP)) | |
409 | || S_GET_SEGMENT (symbolP) == bss_section) | |
410 | && (now_seg == data_section | |
411 | || now_seg == S_GET_SEGMENT (symbolP))) | |
412 | { | |
7c743825 | 413 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
414 | if (now_seg != data_section) |
415 | { | |
7c743825 KH |
416 | /* New .comm for prev .comm symbol. |
417 | ||
418 | If the new size is larger we just change its | |
419 | value. If the new size is smaller, we ignore | |
420 | this symbol. */ | |
252b5132 RH |
421 | if (S_GET_VALUE (symbolP) |
422 | < ((unsigned) frag_now_fix ())) | |
423 | { | |
424 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
425 | } | |
426 | } | |
427 | else | |
428 | { | |
429 | /* It is a .comm/.lcomm being converted to initialized | |
430 | data. */ | |
431 | symbolP->sy_frag = frag_now; | |
432 | #ifdef OBJ_VMS | |
7c743825 | 433 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
434 | #endif |
435 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 436 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
437 | } |
438 | } | |
439 | else | |
440 | { | |
4c63da97 AM |
441 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
442 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
443 | static const char *od_buf = ""; | |
252b5132 | 444 | #else |
4c63da97 AM |
445 | char od_buf[100]; |
446 | od_buf[0] = '\0'; | |
447 | #ifdef BFD_ASSEMBLER | |
448 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
449 | #endif | |
d1a6c242 KH |
450 | sprintf (od_buf, "%d.%d.", |
451 | S_GET_OTHER (symbolP), | |
452 | S_GET_DESC (symbolP)); | |
4c63da97 | 453 | #endif |
0e389e77 | 454 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
455 | sym_name, |
456 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 457 | od_buf, |
252b5132 | 458 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 459 | } |
7c743825 | 460 | } /* if the undefined symbol has no value */ |
252b5132 RH |
461 | } |
462 | else | |
463 | { | |
7c743825 | 464 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
465 | if (!(frag_now == symbolP->sy_frag |
466 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
467 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 468 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 469 | } |
252b5132 RH |
470 | |
471 | } | |
49309057 ILT |
472 | #ifdef BFD_ASSEMBLER |
473 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
474 | { | |
475 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
476 | (valueT) frag_now_fix (), | |
477 | frag_now); | |
478 | } | |
479 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
480 | else |
481 | { | |
482 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
483 | frag_now); | |
484 | #ifdef OBJ_VMS | |
485 | S_SET_OTHER (symbolP, const_flag); | |
486 | #endif /* OBJ_VMS */ | |
487 | ||
488 | symbol_table_insert (symbolP); | |
d4887adc | 489 | } |
252b5132 RH |
490 | |
491 | if (mri_common_symbol != NULL) | |
492 | { | |
493 | /* This symbol is actually being defined within an MRI common | |
494 | section. This requires special handling. */ | |
49309057 ILT |
495 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
496 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
497 | symbolP->sy_value.X_op = O_symbol; |
498 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
499 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
500 | symbolP->sy_frag = &zero_address_frag; | |
501 | S_SET_SEGMENT (symbolP, expr_section); | |
502 | symbolP->sy_mri_common = 1; | |
503 | } | |
504 | ||
505 | #ifdef tc_frob_label | |
506 | tc_frob_label (symbolP); | |
507 | #endif | |
508 | #ifdef obj_frob_label | |
509 | obj_frob_label (symbolP); | |
510 | #endif | |
511 | ||
512 | return symbolP; | |
513 | } | |
514 | \f | |
7c743825 | 515 | /* Die if we can't insert the symbol. */ |
252b5132 | 516 | |
7c743825 | 517 | void |
252b5132 RH |
518 | symbol_table_insert (symbolP) |
519 | symbolS *symbolP; | |
520 | { | |
521 | register const char *error_string; | |
522 | ||
523 | know (symbolP); | |
524 | know (S_GET_NAME (symbolP)); | |
525 | ||
49309057 ILT |
526 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
527 | { | |
528 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
529 | (PTR) symbolP); | |
530 | if (error_string != NULL) | |
0e389e77 | 531 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
532 | S_GET_NAME (symbolP), error_string); |
533 | return; | |
534 | } | |
535 | ||
252b5132 RH |
536 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
537 | { | |
0e389e77 | 538 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 539 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
540 | } /* on error */ |
541 | } | |
252b5132 | 542 | \f |
7c743825 KH |
543 | /* If a symbol name does not exist, create it as undefined, and insert |
544 | it into the symbol table. Return a pointer to it. */ | |
545 | ||
252b5132 RH |
546 | symbolS * |
547 | symbol_find_or_make (name) | |
548 | const char *name; | |
549 | { | |
550 | register symbolS *symbolP; | |
551 | ||
552 | symbolP = symbol_find (name); | |
553 | ||
554 | if (symbolP == NULL) | |
555 | { | |
49309057 ILT |
556 | #ifdef BFD_ASSEMBLER |
557 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
558 | { | |
559 | symbolP = md_undefined_symbol ((char *) name); | |
560 | if (symbolP != NULL) | |
561 | return symbolP; | |
562 | ||
563 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
564 | (valueT) 0, | |
565 | &zero_address_frag); | |
566 | return symbolP; | |
567 | } | |
568 | #endif | |
569 | ||
252b5132 RH |
570 | symbolP = symbol_make (name); |
571 | ||
572 | symbol_table_insert (symbolP); | |
573 | } /* if symbol wasn't found */ | |
574 | ||
575 | return (symbolP); | |
7c743825 | 576 | } |
252b5132 RH |
577 | |
578 | symbolS * | |
579 | symbol_make (name) | |
9758f3fc | 580 | const char *name; |
252b5132 RH |
581 | { |
582 | symbolS *symbolP; | |
583 | ||
7c743825 | 584 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
585 | symbolP = md_undefined_symbol ((char *) name); |
586 | ||
587 | if (!symbolP) | |
588 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
589 | ||
590 | return (symbolP); | |
7c743825 | 591 | } |
252b5132 | 592 | |
7c743825 KH |
593 | /* Implement symbol table lookup. |
594 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
595 | Out: NULL if the name was not in the symbol table, else the address | |
596 | of a struct symbol associated with that name. */ | |
252b5132 RH |
597 | |
598 | symbolS * | |
599 | symbol_find (name) | |
9758f3fc | 600 | const char *name; |
252b5132 RH |
601 | { |
602 | #ifdef STRIP_UNDERSCORE | |
603 | return (symbol_find_base (name, 1)); | |
604 | #else /* STRIP_UNDERSCORE */ | |
605 | return (symbol_find_base (name, 0)); | |
606 | #endif /* STRIP_UNDERSCORE */ | |
7c743825 | 607 | } |
252b5132 | 608 | |
9758f3fc AM |
609 | symbolS * |
610 | symbol_find_exact (name) | |
611 | const char *name; | |
612 | { | |
613 | #ifdef BFD_ASSEMBLER | |
614 | { | |
615 | struct local_symbol *locsym; | |
616 | ||
617 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
618 | if (locsym != NULL) | |
619 | return (symbolS *) locsym; | |
620 | } | |
621 | #endif | |
622 | ||
623 | return ((symbolS *) hash_find (sy_hash, name)); | |
624 | } | |
625 | ||
252b5132 RH |
626 | symbolS * |
627 | symbol_find_base (name, strip_underscore) | |
9758f3fc | 628 | const char *name; |
252b5132 RH |
629 | int strip_underscore; |
630 | { | |
631 | if (strip_underscore && *name == '_') | |
632 | name++; | |
633 | ||
634 | #ifdef tc_canonicalize_symbol_name | |
635 | { | |
636 | char *copy; | |
03987ced | 637 | size_t len = strlen (name) + 1; |
252b5132 | 638 | |
03987ced RH |
639 | copy = (char *) alloca (len); |
640 | memcpy (copy, name, len); | |
252b5132 RH |
641 | name = tc_canonicalize_symbol_name (copy); |
642 | } | |
643 | #endif | |
644 | ||
645 | if (! symbols_case_sensitive) | |
646 | { | |
03987ced RH |
647 | char *copy; |
648 | const char *orig; | |
649 | unsigned char c; | |
650 | ||
651 | orig = name; | |
652 | name = copy = (char *) alloca (strlen (name) + 1); | |
653 | ||
654 | while ((c = *orig++) != '\0') | |
655 | { | |
3882b010 | 656 | *copy++ = TOUPPER (c); |
03987ced RH |
657 | } |
658 | *copy = '\0'; | |
252b5132 RH |
659 | } |
660 | ||
9758f3fc | 661 | return symbol_find_exact (name); |
252b5132 RH |
662 | } |
663 | ||
7c743825 KH |
664 | /* Once upon a time, symbols were kept in a singly linked list. At |
665 | least coff needs to be able to rearrange them from time to time, for | |
666 | which a doubly linked list is much more convenient. Loic did these | |
667 | as macros which seemed dangerous to me so they're now functions. | |
668 | xoxorich. */ | |
669 | ||
670 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 671 | |
7c743825 | 672 | void |
252b5132 RH |
673 | symbol_append (addme, target, rootPP, lastPP) |
674 | symbolS *addme; | |
675 | symbolS *target; | |
676 | symbolS **rootPP; | |
677 | symbolS **lastPP; | |
678 | { | |
49309057 ILT |
679 | if (LOCAL_SYMBOL_CHECK (addme)) |
680 | abort (); | |
681 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
682 | abort (); | |
683 | ||
252b5132 RH |
684 | if (target == NULL) |
685 | { | |
686 | know (*rootPP == NULL); | |
687 | know (*lastPP == NULL); | |
688 | addme->sy_next = NULL; | |
689 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
690 | addme->sy_previous = NULL; | |
691 | #endif | |
692 | *rootPP = addme; | |
693 | *lastPP = addme; | |
694 | return; | |
7c743825 | 695 | } /* if the list is empty */ |
252b5132 RH |
696 | |
697 | if (target->sy_next != NULL) | |
698 | { | |
699 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
700 | target->sy_next->sy_previous = addme; | |
701 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
702 | } | |
703 | else | |
704 | { | |
705 | know (*lastPP == target); | |
706 | *lastPP = addme; | |
7c743825 | 707 | } /* if we have a next */ |
252b5132 RH |
708 | |
709 | addme->sy_next = target->sy_next; | |
710 | target->sy_next = addme; | |
711 | ||
712 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
713 | addme->sy_previous = target; | |
714 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
715 | ||
716 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
717 | } | |
718 | ||
7c743825 KH |
719 | /* Set the chain pointers of SYMBOL to null. */ |
720 | ||
721 | void | |
252b5132 RH |
722 | symbol_clear_list_pointers (symbolP) |
723 | symbolS *symbolP; | |
724 | { | |
49309057 ILT |
725 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
726 | abort (); | |
252b5132 RH |
727 | symbolP->sy_next = NULL; |
728 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
729 | symbolP->sy_previous = NULL; | |
730 | #endif | |
731 | } | |
732 | ||
733 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
734 | /* Remove SYMBOLP from the list. */ |
735 | ||
736 | void | |
252b5132 RH |
737 | symbol_remove (symbolP, rootPP, lastPP) |
738 | symbolS *symbolP; | |
739 | symbolS **rootPP; | |
740 | symbolS **lastPP; | |
741 | { | |
49309057 ILT |
742 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
743 | abort (); | |
744 | ||
252b5132 RH |
745 | if (symbolP == *rootPP) |
746 | { | |
747 | *rootPP = symbolP->sy_next; | |
7c743825 | 748 | } /* if it was the root */ |
252b5132 RH |
749 | |
750 | if (symbolP == *lastPP) | |
751 | { | |
752 | *lastPP = symbolP->sy_previous; | |
7c743825 | 753 | } /* if it was the tail */ |
252b5132 RH |
754 | |
755 | if (symbolP->sy_next != NULL) | |
756 | { | |
757 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 758 | } /* if not last */ |
252b5132 RH |
759 | |
760 | if (symbolP->sy_previous != NULL) | |
761 | { | |
762 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 763 | } /* if not first */ |
252b5132 RH |
764 | |
765 | debug_verify_symchain (*rootPP, *lastPP); | |
766 | } | |
767 | ||
7c743825 KH |
768 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
769 | ||
770 | void | |
252b5132 RH |
771 | symbol_insert (addme, target, rootPP, lastPP) |
772 | symbolS *addme; | |
773 | symbolS *target; | |
774 | symbolS **rootPP; | |
ab9da554 | 775 | symbolS **lastPP ATTRIBUTE_UNUSED; |
252b5132 | 776 | { |
49309057 ILT |
777 | if (LOCAL_SYMBOL_CHECK (addme)) |
778 | abort (); | |
779 | if (LOCAL_SYMBOL_CHECK (target)) | |
780 | abort (); | |
781 | ||
252b5132 RH |
782 | if (target->sy_previous != NULL) |
783 | { | |
784 | target->sy_previous->sy_next = addme; | |
785 | } | |
786 | else | |
787 | { | |
788 | know (*rootPP == target); | |
789 | *rootPP = addme; | |
7c743825 | 790 | } /* if not first */ |
252b5132 RH |
791 | |
792 | addme->sy_previous = target->sy_previous; | |
793 | target->sy_previous = addme; | |
794 | addme->sy_next = target; | |
795 | ||
796 | debug_verify_symchain (*rootPP, *lastPP); | |
797 | } | |
798 | ||
799 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
800 | ||
7c743825 | 801 | void |
252b5132 RH |
802 | verify_symbol_chain (rootP, lastP) |
803 | symbolS *rootP; | |
804 | symbolS *lastP; | |
805 | { | |
806 | symbolS *symbolP = rootP; | |
807 | ||
808 | if (symbolP == NULL) | |
809 | return; | |
810 | ||
811 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
812 | { | |
49309057 ILT |
813 | #ifdef BFD_ASSEMBLER |
814 | assert (symbolP->bsym != NULL); | |
815 | #endif | |
252b5132 RH |
816 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
817 | assert (symbolP->sy_next->sy_previous == symbolP); | |
818 | #else | |
819 | /* Walk the list anyways, to make sure pointers are still good. */ | |
820 | ; | |
821 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
822 | } | |
823 | ||
824 | assert (lastP == symbolP); | |
825 | } | |
826 | ||
827 | void | |
828 | verify_symbol_chain_2 (sym) | |
829 | symbolS *sym; | |
830 | { | |
831 | symbolS *p = sym, *n = sym; | |
832 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
833 | while (symbol_previous (p)) | |
834 | p = symbol_previous (p); | |
835 | #endif | |
836 | while (symbol_next (n)) | |
837 | n = symbol_next (n); | |
838 | verify_symbol_chain (p, n); | |
839 | } | |
840 | ||
0909233e AM |
841 | static void |
842 | report_op_error (symp, left, right) | |
843 | symbolS *symp; | |
844 | symbolS *left, *right; | |
845 | { | |
846 | char *file; | |
847 | unsigned int line; | |
848 | segT seg_left = S_GET_SEGMENT (left); | |
849 | segT seg_right = right ? S_GET_SEGMENT (right) : 0; | |
850 | ||
851 | if (expr_symbol_where (symp, &file, &line)) | |
852 | { | |
853 | if (seg_left == undefined_section) | |
854 | as_bad_where (file, line, | |
855 | _("undefined symbol `%s' in operation"), | |
856 | S_GET_NAME (left)); | |
857 | if (seg_right == undefined_section) | |
858 | as_bad_where (file, line, | |
859 | _("undefined symbol `%s' in operation"), | |
860 | S_GET_NAME (right)); | |
861 | if (seg_left != undefined_section | |
862 | && seg_right != undefined_section) | |
863 | { | |
864 | if (right) | |
865 | as_bad_where (file, line, | |
866 | _("invalid sections for operation on `%s' and `%s'"), | |
867 | S_GET_NAME (left), S_GET_NAME (right)); | |
868 | else | |
869 | as_bad_where (file, line, | |
870 | _("invalid section for operation on `%s'"), | |
871 | S_GET_NAME (left)); | |
872 | } | |
873 | ||
874 | } | |
875 | else | |
876 | { | |
877 | if (seg_left == undefined_section) | |
878 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
879 | S_GET_NAME (left), S_GET_NAME (symp)); | |
880 | if (seg_right == undefined_section) | |
881 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
882 | S_GET_NAME (right), S_GET_NAME (symp)); | |
883 | if (seg_left != undefined_section | |
884 | && seg_right != undefined_section) | |
885 | { | |
886 | if (right) | |
887 | as_bad_where (file, line, | |
888 | _("invalid sections for operation on `%s' and `%s' setting `%s'"), | |
889 | S_GET_NAME (left), S_GET_NAME (right), S_GET_NAME (symp)); | |
890 | else | |
891 | as_bad_where (file, line, | |
892 | _("invalid section for operation on `%s' setting `%s'"), | |
893 | S_GET_NAME (left), S_GET_NAME (symp)); | |
894 | } | |
895 | } | |
896 | } | |
897 | ||
252b5132 RH |
898 | /* Resolve the value of a symbol. This is called during the final |
899 | pass over the symbol table to resolve any symbols with complex | |
900 | values. */ | |
901 | ||
902 | valueT | |
6386f3a7 | 903 | resolve_symbol_value (symp) |
252b5132 | 904 | symbolS *symp; |
252b5132 RH |
905 | { |
906 | int resolved; | |
03e83a45 | 907 | valueT final_val = 0; |
252b5132 RH |
908 | segT final_seg; |
909 | ||
a1605869 | 910 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
911 | if (LOCAL_SYMBOL_CHECK (symp)) |
912 | { | |
913 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
914 | ||
bd780143 | 915 | final_val = locsym->lsy_value; |
49309057 | 916 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 917 | return final_val; |
49309057 | 918 | |
bd780143 | 919 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 920 | |
6386f3a7 | 921 | if (finalize_syms) |
49309057 | 922 | { |
bd780143 | 923 | locsym->lsy_value = final_val; |
49309057 ILT |
924 | local_symbol_mark_resolved (locsym); |
925 | } | |
926 | ||
927 | return final_val; | |
928 | } | |
a1605869 | 929 | #endif |
49309057 | 930 | |
252b5132 RH |
931 | if (symp->sy_resolved) |
932 | { | |
933 | if (symp->sy_value.X_op == O_constant) | |
934 | return (valueT) symp->sy_value.X_add_number; | |
935 | else | |
936 | return 0; | |
937 | } | |
938 | ||
939 | resolved = 0; | |
940 | final_seg = S_GET_SEGMENT (symp); | |
941 | ||
942 | if (symp->sy_resolving) | |
943 | { | |
6386f3a7 | 944 | if (finalize_syms) |
0e389e77 | 945 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 946 | S_GET_NAME (symp)); |
252b5132 RH |
947 | final_val = 0; |
948 | resolved = 1; | |
949 | } | |
950 | else | |
951 | { | |
952 | symbolS *add_symbol, *op_symbol; | |
953 | offsetT left, right; | |
954 | segT seg_left, seg_right; | |
955 | operatorT op; | |
956 | ||
957 | symp->sy_resolving = 1; | |
958 | ||
959 | /* Help out with CSE. */ | |
960 | add_symbol = symp->sy_value.X_add_symbol; | |
961 | op_symbol = symp->sy_value.X_op_symbol; | |
962 | final_val = symp->sy_value.X_add_number; | |
963 | op = symp->sy_value.X_op; | |
964 | ||
965 | switch (op) | |
966 | { | |
967 | default: | |
968 | BAD_CASE (op); | |
969 | break; | |
970 | ||
971 | case O_absent: | |
972 | final_val = 0; | |
973 | /* Fall through. */ | |
974 | ||
975 | case O_constant: | |
bea9907b | 976 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
977 | if (final_seg == expr_section) |
978 | final_seg = absolute_section; | |
979 | resolved = 1; | |
980 | break; | |
981 | ||
982 | case O_symbol: | |
983 | case O_symbol_rva: | |
6386f3a7 | 984 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
985 | seg_left = S_GET_SEGMENT (add_symbol); |
986 | if (finalize_syms) | |
987 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 988 | |
e0890092 | 989 | do_symbol: |
252b5132 RH |
990 | if (symp->sy_mri_common) |
991 | { | |
992 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
993 | relocation routines are going to handle it specially. |
994 | Don't change the value. */ | |
49309057 | 995 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
996 | break; |
997 | } | |
998 | ||
6386f3a7 | 999 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1000 | { |
1001 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1002 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1003 | add_symbol); | |
1004 | copy_symbol_attributes (symp, add_symbol); | |
1005 | } | |
252b5132 | 1006 | |
e0890092 AM |
1007 | /* If we have equated this symbol to an undefined or common |
1008 | symbol, keep X_op set to O_symbol, and don't change | |
1009 | X_add_number. This permits the routine which writes out | |
1010 | relocation to detect this case, and convert the | |
1011 | relocation to be against the symbol to which this symbol | |
1012 | is equated. */ | |
252b5132 RH |
1013 | if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol)) |
1014 | { | |
6386f3a7 | 1015 | if (finalize_syms) |
252b5132 | 1016 | { |
252b5132 RH |
1017 | symp->sy_value.X_op = O_symbol; |
1018 | symp->sy_value.X_add_symbol = add_symbol; | |
1019 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1020 | /* Use X_op_symbol as a flag. */ |
1021 | symp->sy_value.X_op_symbol = add_symbol; | |
1022 | final_seg = seg_left; | |
252b5132 RH |
1023 | } |
1024 | final_val = 0; | |
49309057 | 1025 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1026 | symp->sy_resolving = 0; |
252b5132 RH |
1027 | goto exit_dont_set_value; |
1028 | } | |
e0890092 AM |
1029 | else if (finalize_syms && final_seg == expr_section |
1030 | && seg_left != expr_section) | |
1031 | { | |
1032 | /* If the symbol is an expression symbol, do similarly | |
1033 | as for undefined and common syms above. Handles | |
1034 | "sym +/- expr" where "expr" cannot be evaluated | |
1035 | immediately, and we want relocations to be against | |
1036 | "sym", eg. because it is weak. */ | |
1037 | symp->sy_value.X_op = O_symbol; | |
1038 | symp->sy_value.X_add_symbol = add_symbol; | |
1039 | symp->sy_value.X_add_number = final_val; | |
1040 | symp->sy_value.X_op_symbol = add_symbol; | |
1041 | final_seg = seg_left; | |
1042 | final_val += symp->sy_frag->fr_address + left; | |
1043 | resolved = symbol_resolved_p (add_symbol); | |
1044 | symp->sy_resolving = 0; | |
1045 | goto exit_dont_set_value; | |
1046 | } | |
252b5132 RH |
1047 | else |
1048 | { | |
1049 | final_val += symp->sy_frag->fr_address + left; | |
1050 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1051 | final_seg = seg_left; |
252b5132 RH |
1052 | } |
1053 | ||
49309057 | 1054 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1055 | break; |
1056 | ||
1057 | case O_uminus: | |
1058 | case O_bit_not: | |
1059 | case O_logical_not: | |
6386f3a7 | 1060 | left = resolve_symbol_value (add_symbol); |
784b640d | 1061 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1062 | |
0909233e AM |
1063 | /* By reducing these to the relevant dyadic operator, we get |
1064 | !S -> S == 0 permitted on anything, | |
1065 | -S -> 0 - S only permitted on absolute | |
1066 | ~S -> S ^ ~0 only permitted on absolute */ | |
1067 | if (op != O_logical_not && seg_left != absolute_section | |
1068 | && finalize_syms) | |
1069 | report_op_error (symp, add_symbol, NULL); | |
1070 | ||
1071 | if (final_seg == expr_section || final_seg == undefined_section) | |
1072 | final_seg = absolute_section; | |
1073 | ||
252b5132 RH |
1074 | if (op == O_uminus) |
1075 | left = -left; | |
1076 | else if (op == O_logical_not) | |
1077 | left = !left; | |
1078 | else | |
1079 | left = ~left; | |
1080 | ||
1081 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1082 | |
49309057 | 1083 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1084 | break; |
1085 | ||
1086 | case O_multiply: | |
1087 | case O_divide: | |
1088 | case O_modulus: | |
1089 | case O_left_shift: | |
1090 | case O_right_shift: | |
1091 | case O_bit_inclusive_or: | |
1092 | case O_bit_or_not: | |
1093 | case O_bit_exclusive_or: | |
1094 | case O_bit_and: | |
1095 | case O_add: | |
1096 | case O_subtract: | |
1097 | case O_eq: | |
1098 | case O_ne: | |
1099 | case O_lt: | |
1100 | case O_le: | |
1101 | case O_ge: | |
1102 | case O_gt: | |
1103 | case O_logical_and: | |
1104 | case O_logical_or: | |
6386f3a7 AM |
1105 | left = resolve_symbol_value (add_symbol); |
1106 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1107 | seg_left = S_GET_SEGMENT (add_symbol); |
1108 | seg_right = S_GET_SEGMENT (op_symbol); | |
1109 | ||
1110 | /* Simplify addition or subtraction of a constant by folding the | |
1111 | constant into X_add_number. */ | |
e0890092 | 1112 | if (op == O_add) |
252b5132 RH |
1113 | { |
1114 | if (seg_right == absolute_section) | |
1115 | { | |
e0890092 | 1116 | final_val += right; |
252b5132 RH |
1117 | goto do_symbol; |
1118 | } | |
e0890092 | 1119 | else if (seg_left == absolute_section) |
252b5132 | 1120 | { |
252b5132 RH |
1121 | final_val += left; |
1122 | add_symbol = op_symbol; | |
1123 | left = right; | |
e0890092 AM |
1124 | seg_left = seg_right; |
1125 | goto do_symbol; | |
1126 | } | |
1127 | } | |
1128 | else if (op == O_subtract) | |
1129 | { | |
1130 | if (seg_right == absolute_section) | |
1131 | { | |
1132 | final_val -= right; | |
252b5132 RH |
1133 | goto do_symbol; |
1134 | } | |
1135 | } | |
1136 | ||
e0890092 AM |
1137 | /* Equality and non-equality tests are permitted on anything. |
1138 | Subtraction, and other comparison operators are permitted if | |
1139 | both operands are in the same section. Otherwise, both | |
1140 | operands must be absolute. We already handled the case of | |
1141 | addition or subtraction of a constant above. This will | |
1142 | probably need to be changed for an object file format which | |
1143 | supports arbitrary expressions, such as IEEE-695. | |
1144 | ||
1145 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1146 | otherwise we may get the same message multiple times. */ |
0909233e AM |
1147 | if (finalize_syms |
1148 | && !(seg_left == absolute_section | |
1149 | && seg_right == absolute_section) | |
1150 | && !(op == O_eq || op == O_ne) | |
1151 | && !((op == O_subtract | |
1152 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1153 | && seg_left == seg_right | |
1154 | && (seg_left != undefined_section | |
1155 | || add_symbol == op_symbol))) | |
1156 | report_op_error (symp, add_symbol, op_symbol); | |
1157 | ||
1158 | if (final_seg == expr_section || final_seg == undefined_section) | |
1159 | final_seg = absolute_section; | |
252b5132 RH |
1160 | |
1161 | /* Check for division by zero. */ | |
1162 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1163 | { | |
1164 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1165 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1166 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1167 | { |
1168 | char *file; | |
1169 | unsigned int line; | |
1170 | ||
1171 | if (expr_symbol_where (symp, &file, &line)) | |
1172 | as_bad_where (file, line, _("division by zero")); | |
1173 | else | |
0e389e77 | 1174 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1175 | S_GET_NAME (symp)); |
1176 | } | |
1177 | ||
1178 | right = 1; | |
1179 | } | |
1180 | ||
1181 | switch (symp->sy_value.X_op) | |
1182 | { | |
1183 | case O_multiply: left *= right; break; | |
1184 | case O_divide: left /= right; break; | |
1185 | case O_modulus: left %= right; break; | |
1186 | case O_left_shift: left <<= right; break; | |
1187 | case O_right_shift: left >>= right; break; | |
1188 | case O_bit_inclusive_or: left |= right; break; | |
1189 | case O_bit_or_not: left |= ~right; break; | |
1190 | case O_bit_exclusive_or: left ^= right; break; | |
1191 | case O_bit_and: left &= right; break; | |
1192 | case O_add: left += right; break; | |
1193 | case O_subtract: left -= right; break; | |
e0890092 AM |
1194 | case O_eq: |
1195 | case O_ne: | |
1196 | left = (left == right && seg_left == seg_right | |
1197 | && (seg_left != undefined_section | |
1198 | || add_symbol == op_symbol) | |
1199 | ? ~ (offsetT) 0 : 0); | |
1200 | if (symp->sy_value.X_op == O_ne) | |
1201 | left = ~left; | |
1202 | break; | |
252b5132 RH |
1203 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1204 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1205 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1206 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1207 | case O_logical_and: left = left && right; break; | |
1208 | case O_logical_or: left = left || right; break; | |
1209 | default: abort (); | |
1210 | } | |
1211 | ||
1212 | final_val += symp->sy_frag->fr_address + left; | |
1213 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1214 | { |
1215 | if (seg_left == undefined_section | |
1216 | || seg_right == undefined_section) | |
1217 | final_seg = undefined_section; | |
1218 | else if (seg_left == absolute_section) | |
1219 | final_seg = seg_right; | |
1220 | else | |
1221 | final_seg = seg_left; | |
1222 | } | |
49309057 ILT |
1223 | resolved = (symbol_resolved_p (add_symbol) |
1224 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1225 | break; |
252b5132 RH |
1226 | |
1227 | case O_register: | |
1228 | case O_big: | |
1229 | case O_illegal: | |
1230 | /* Give an error (below) if not in expr_section. We don't | |
1231 | want to worry about expr_section symbols, because they | |
1232 | are fictional (they are created as part of expression | |
1233 | resolution), and any problems may not actually mean | |
1234 | anything. */ | |
1235 | break; | |
1236 | } | |
1237 | ||
1238 | symp->sy_resolving = 0; | |
1239 | } | |
1240 | ||
6386f3a7 | 1241 | if (finalize_syms) |
05bdb37e | 1242 | S_SET_VALUE (symp, final_val); |
252b5132 | 1243 | |
05bdb37e AM |
1244 | exit_dont_set_value: |
1245 | /* Always set the segment, even if not finalizing the value. | |
1246 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1247 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1248 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1249 | for a stab symbol, so we use this bad hack. */ | |
1250 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1251 | #endif |
05bdb37e | 1252 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1253 | |
252b5132 | 1254 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1255 | if (finalize_syms) |
252b5132 RH |
1256 | { |
1257 | if (resolved) | |
1258 | symp->sy_resolved = 1; | |
1259 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1260 | { | |
0e389e77 | 1261 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1262 | S_GET_NAME (symp)); |
252b5132 RH |
1263 | symp->sy_resolved = 1; |
1264 | } | |
1265 | } | |
1266 | ||
1267 | return final_val; | |
1268 | } | |
1269 | ||
49309057 ILT |
1270 | #ifdef BFD_ASSEMBLER |
1271 | ||
1272 | static void resolve_local_symbol PARAMS ((const char *, PTR)); | |
1273 | ||
1274 | /* A static function passed to hash_traverse. */ | |
1275 | ||
1276 | static void | |
1277 | resolve_local_symbol (key, value) | |
ab9da554 | 1278 | const char *key ATTRIBUTE_UNUSED; |
49309057 ILT |
1279 | PTR value; |
1280 | { | |
1281 | if (value != NULL) | |
6386f3a7 | 1282 | resolve_symbol_value (value); |
49309057 ILT |
1283 | } |
1284 | ||
1285 | #endif | |
1286 | ||
1287 | /* Resolve all local symbols. */ | |
1288 | ||
1289 | void | |
1290 | resolve_local_symbol_values () | |
1291 | { | |
1292 | #ifdef BFD_ASSEMBLER | |
1293 | hash_traverse (local_hash, resolve_local_symbol); | |
1294 | #endif | |
1295 | } | |
1296 | ||
252b5132 RH |
1297 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1298 | They are *really* local. That is, they go out of scope whenever we see a | |
1299 | label that isn't local. Also, like fb labels, there can be multiple | |
1300 | instances of a dollar label. Therefor, we name encode each instance with | |
1301 | the instance number, keep a list of defined symbols separate from the real | |
1302 | symbol table, and we treat these buggers as a sparse array. */ | |
1303 | ||
1304 | static long *dollar_labels; | |
1305 | static long *dollar_label_instances; | |
1306 | static char *dollar_label_defines; | |
1307 | static unsigned long dollar_label_count; | |
1308 | static unsigned long dollar_label_max; | |
1309 | ||
7c743825 | 1310 | int |
252b5132 RH |
1311 | dollar_label_defined (label) |
1312 | long label; | |
1313 | { | |
1314 | long *i; | |
1315 | ||
1316 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1317 | ||
1318 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1319 | if (*i == label) | |
1320 | return dollar_label_defines[i - dollar_labels]; | |
1321 | ||
7c743825 | 1322 | /* If we get here, label isn't defined. */ |
252b5132 | 1323 | return 0; |
7c743825 | 1324 | } |
252b5132 RH |
1325 | |
1326 | static long | |
1327 | dollar_label_instance (label) | |
1328 | long label; | |
1329 | { | |
1330 | long *i; | |
1331 | ||
1332 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1333 | ||
1334 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1335 | if (*i == label) | |
1336 | return (dollar_label_instances[i - dollar_labels]); | |
1337 | ||
7c743825 KH |
1338 | /* If we get here, we haven't seen the label before. |
1339 | Therefore its instance count is zero. */ | |
252b5132 RH |
1340 | return 0; |
1341 | } | |
1342 | ||
7c743825 | 1343 | void |
252b5132 RH |
1344 | dollar_label_clear () |
1345 | { | |
1346 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1347 | } | |
1348 | ||
1349 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1350 | ||
7c743825 | 1351 | void |
252b5132 RH |
1352 | define_dollar_label (label) |
1353 | long label; | |
1354 | { | |
1355 | long *i; | |
1356 | ||
1357 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1358 | if (*i == label) | |
1359 | { | |
1360 | ++dollar_label_instances[i - dollar_labels]; | |
1361 | dollar_label_defines[i - dollar_labels] = 1; | |
1362 | return; | |
1363 | } | |
1364 | ||
7c743825 | 1365 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1366 | |
1367 | if (dollar_labels == NULL) | |
1368 | { | |
1369 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1370 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1371 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1372 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1373 | dollar_label_count = 0; | |
1374 | } | |
1375 | else if (dollar_label_count == dollar_label_max) | |
1376 | { | |
1377 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1378 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1379 | dollar_label_max * sizeof (long)); | |
1380 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1381 | dollar_label_max * sizeof (long)); | |
1382 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1383 | } /* if we needed to grow */ |
252b5132 RH |
1384 | |
1385 | dollar_labels[dollar_label_count] = label; | |
1386 | dollar_label_instances[dollar_label_count] = 1; | |
1387 | dollar_label_defines[dollar_label_count] = 1; | |
1388 | ++dollar_label_count; | |
1389 | } | |
1390 | ||
7c743825 KH |
1391 | /* Caller must copy returned name: we re-use the area for the next name. |
1392 | ||
1393 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1394 | where n is the label number and m is the instance number. "L" makes | |
1395 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1396 | ordinary symbol SHOULD get the same name as a local label | |
1397 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1398 | ||
1399 | fb labels get the same treatment, except that ^B is used in place | |
1400 | of ^A. */ | |
1401 | ||
1402 | char * /* Return local label name. */ | |
252b5132 | 1403 | dollar_label_name (n, augend) |
7c743825 KH |
1404 | register long n; /* we just saw "n$:" : n a number. */ |
1405 | register int augend; /* 0 for current instance, 1 for new instance. */ | |
252b5132 RH |
1406 | { |
1407 | long i; | |
7c743825 | 1408 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1409 | static char symbol_name_build[24]; |
1410 | register char *p; | |
1411 | register char *q; | |
7c743825 | 1412 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1413 | |
1414 | know (n >= 0); | |
1415 | know (augend == 0 || augend == 1); | |
1416 | p = symbol_name_build; | |
f84dd1f0 NC |
1417 | #ifdef LOCAL_LABEL_PREFIX |
1418 | *p++ = LOCAL_LABEL_PREFIX; | |
1419 | #endif | |
252b5132 RH |
1420 | *p++ = 'L'; |
1421 | ||
7c743825 KH |
1422 | /* Next code just does sprintf( {}, "%d", n); */ |
1423 | /* Label number. */ | |
252b5132 RH |
1424 | q = symbol_name_temporary; |
1425 | for (*q++ = 0, i = n; i; ++q) | |
1426 | { | |
1427 | *q = i % 10 + '0'; | |
1428 | i /= 10; | |
1429 | } | |
1430 | while ((*p = *--q) != '\0') | |
1431 | ++p; | |
1432 | ||
aa257fcd | 1433 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1434 | |
7c743825 | 1435 | /* Instance number. */ |
252b5132 RH |
1436 | q = symbol_name_temporary; |
1437 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1438 | { | |
1439 | *q = i % 10 + '0'; | |
1440 | i /= 10; | |
1441 | } | |
1442 | while ((*p++ = *--q) != '\0');; | |
1443 | ||
7c743825 | 1444 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1445 | return symbol_name_build; |
1446 | } | |
1447 | ||
7c743825 KH |
1448 | /* Sombody else's idea of local labels. They are made by "n:" where n |
1449 | is any decimal digit. Refer to them with | |
1450 | "nb" for previous (backward) n: | |
1451 | or "nf" for next (forward) n:. | |
1452 | ||
1453 | We do a little better and let n be any number, not just a single digit, but | |
1454 | since the other guy's assembler only does ten, we treat the first ten | |
1455 | specially. | |
1456 | ||
1457 | Like someone else's assembler, we have one set of local label counters for | |
1458 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1459 | implies that one can refer to a label in another segment, and indeed some | |
1460 | crufty compilers have done just that. | |
1461 | ||
1462 | Since there could be a LOT of these things, treat them as a sparse | |
1463 | array. */ | |
252b5132 RH |
1464 | |
1465 | #define FB_LABEL_SPECIAL (10) | |
1466 | ||
1467 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1468 | static long *fb_labels; | |
1469 | static long *fb_label_instances; | |
1470 | static long fb_label_count; | |
1471 | static long fb_label_max; | |
1472 | ||
7c743825 | 1473 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1474 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1475 | ||
7c743825 | 1476 | static void |
252b5132 RH |
1477 | fb_label_init () |
1478 | { | |
1479 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1480 | } |
252b5132 | 1481 | |
7c743825 KH |
1482 | /* Add one to the instance number of this fb label. */ |
1483 | ||
1484 | void | |
252b5132 RH |
1485 | fb_label_instance_inc (label) |
1486 | long label; | |
1487 | { | |
1488 | long *i; | |
1489 | ||
1490 | if (label < FB_LABEL_SPECIAL) | |
1491 | { | |
1492 | ++fb_low_counter[label]; | |
1493 | return; | |
1494 | } | |
1495 | ||
1496 | if (fb_labels != NULL) | |
1497 | { | |
1498 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1499 | i < fb_labels + fb_label_count; ++i) | |
1500 | { | |
1501 | if (*i == label) | |
1502 | { | |
1503 | ++fb_label_instances[i - fb_labels]; | |
1504 | return; | |
7c743825 KH |
1505 | } /* if we find it */ |
1506 | } /* for each existing label */ | |
252b5132 RH |
1507 | } |
1508 | ||
7c743825 | 1509 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1510 | |
1511 | if (fb_labels == NULL) | |
1512 | { | |
1513 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1514 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1515 | fb_label_max = FB_LABEL_BUMP_BY; | |
1516 | fb_label_count = FB_LABEL_SPECIAL; | |
1517 | ||
1518 | } | |
1519 | else if (fb_label_count == fb_label_max) | |
1520 | { | |
1521 | fb_label_max += FB_LABEL_BUMP_BY; | |
1522 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1523 | fb_label_max * sizeof (long)); | |
1524 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1525 | fb_label_max * sizeof (long)); | |
7c743825 | 1526 | } /* if we needed to grow */ |
252b5132 RH |
1527 | |
1528 | fb_labels[fb_label_count] = label; | |
1529 | fb_label_instances[fb_label_count] = 1; | |
1530 | ++fb_label_count; | |
1531 | } | |
1532 | ||
7c743825 | 1533 | static long |
252b5132 RH |
1534 | fb_label_instance (label) |
1535 | long label; | |
1536 | { | |
1537 | long *i; | |
1538 | ||
1539 | if (label < FB_LABEL_SPECIAL) | |
1540 | { | |
1541 | return (fb_low_counter[label]); | |
1542 | } | |
1543 | ||
1544 | if (fb_labels != NULL) | |
1545 | { | |
1546 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1547 | i < fb_labels + fb_label_count; ++i) | |
1548 | { | |
1549 | if (*i == label) | |
1550 | { | |
1551 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1552 | } /* if we find it */ |
1553 | } /* for each existing label */ | |
252b5132 RH |
1554 | } |
1555 | ||
1556 | /* We didn't find the label, so this must be a reference to the | |
1557 | first instance. */ | |
1558 | return 0; | |
1559 | } | |
1560 | ||
7c743825 KH |
1561 | /* Caller must copy returned name: we re-use the area for the next name. |
1562 | ||
1563 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1564 | where n is the label number and m is the instance number. "L" makes | |
1565 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1566 | ordinary symbol SHOULD get the same name as a local label | |
1567 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1568 | ||
1569 | dollar labels get the same treatment, except that ^A is used in | |
1570 | place of ^B. */ | |
1571 | ||
1572 | char * /* Return local label name. */ | |
252b5132 | 1573 | fb_label_name (n, augend) |
7c743825 KH |
1574 | long n; /* We just saw "n:", "nf" or "nb" : n a number. */ |
1575 | long augend; /* 0 for nb, 1 for n:, nf. */ | |
252b5132 RH |
1576 | { |
1577 | long i; | |
7c743825 | 1578 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1579 | static char symbol_name_build[24]; |
1580 | register char *p; | |
1581 | register char *q; | |
7c743825 | 1582 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1583 | |
1584 | know (n >= 0); | |
1585 | know (augend == 0 || augend == 1); | |
1586 | p = symbol_name_build; | |
aa257fcd NC |
1587 | #ifdef LOCAL_LABEL_PREFIX |
1588 | *p++ = LOCAL_LABEL_PREFIX; | |
1589 | #endif | |
252b5132 RH |
1590 | *p++ = 'L'; |
1591 | ||
7c743825 KH |
1592 | /* Next code just does sprintf( {}, "%d", n); */ |
1593 | /* Label number. */ | |
252b5132 RH |
1594 | q = symbol_name_temporary; |
1595 | for (*q++ = 0, i = n; i; ++q) | |
1596 | { | |
1597 | *q = i % 10 + '0'; | |
1598 | i /= 10; | |
1599 | } | |
1600 | while ((*p = *--q) != '\0') | |
1601 | ++p; | |
1602 | ||
aa257fcd | 1603 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1604 | |
7c743825 | 1605 | /* Instance number. */ |
252b5132 RH |
1606 | q = symbol_name_temporary; |
1607 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1608 | { | |
1609 | *q = i % 10 + '0'; | |
1610 | i /= 10; | |
1611 | } | |
1612 | while ((*p++ = *--q) != '\0');; | |
1613 | ||
7c743825 | 1614 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1615 | return (symbol_name_build); |
7c743825 | 1616 | } |
252b5132 | 1617 | |
7c743825 KH |
1618 | /* Decode name that may have been generated by foo_label_name() above. |
1619 | If the name wasn't generated by foo_label_name(), then return it | |
1620 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1621 | |
1622 | char * | |
1623 | decode_local_label_name (s) | |
1624 | char *s; | |
1625 | { | |
1626 | char *p; | |
1627 | char *symbol_decode; | |
1628 | int label_number; | |
1629 | int instance_number; | |
1630 | char *type; | |
d95767bf | 1631 | const char *message_format; |
aa257fcd | 1632 | int index = 0; |
43ad3147 | 1633 | |
aa257fcd NC |
1634 | #ifdef LOCAL_LABEL_PREFIX |
1635 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1636 | ++index; | |
1637 | #endif | |
43ad3147 | 1638 | |
aa257fcd | 1639 | if (s[index] != 'L') |
252b5132 RH |
1640 | return s; |
1641 | ||
3882b010 | 1642 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1643 | label_number = (10 * label_number) + *p - '0'; |
1644 | ||
aa257fcd | 1645 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1646 | type = "dollar"; |
aa257fcd | 1647 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1648 | type = "fb"; |
1649 | else | |
1650 | return s; | |
1651 | ||
3882b010 | 1652 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1653 | instance_number = (10 * instance_number) + *p - '0'; |
1654 | ||
d95767bf | 1655 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1656 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1657 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1658 | ||
1659 | return symbol_decode; | |
1660 | } | |
1661 | ||
1662 | /* Get the value of a symbol. */ | |
1663 | ||
1664 | valueT | |
1665 | S_GET_VALUE (s) | |
1666 | symbolS *s; | |
1667 | { | |
a1605869 | 1668 | #ifdef BFD_ASSEMBLER |
49309057 | 1669 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1670 | return resolve_symbol_value (s); |
a1605869 | 1671 | #endif |
49309057 | 1672 | |
ac62c346 | 1673 | if (!s->sy_resolved) |
e46d99eb | 1674 | { |
6386f3a7 AM |
1675 | valueT val = resolve_symbol_value (s); |
1676 | if (!finalize_syms) | |
e46d99eb AM |
1677 | return val; |
1678 | } | |
252b5132 RH |
1679 | if (s->sy_value.X_op != O_constant) |
1680 | { | |
1681 | static symbolS *recur; | |
1682 | ||
1683 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1684 | may call S_GET_VALUE. We use a static symbol to avoid the | |
1685 | immediate recursion. */ | |
1686 | if (recur == s) | |
1687 | return (valueT) s->sy_value.X_add_number; | |
1688 | recur = s; | |
1689 | if (! s->sy_resolved | |
1690 | || s->sy_value.X_op != O_symbol | |
1691 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1692 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1693 | S_GET_NAME (s)); |
1694 | recur = NULL; | |
1695 | } | |
1696 | return (valueT) s->sy_value.X_add_number; | |
1697 | } | |
1698 | ||
1699 | /* Set the value of a symbol. */ | |
1700 | ||
1701 | void | |
1702 | S_SET_VALUE (s, val) | |
1703 | symbolS *s; | |
1704 | valueT val; | |
1705 | { | |
a1605869 | 1706 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1707 | if (LOCAL_SYMBOL_CHECK (s)) |
1708 | { | |
bd780143 | 1709 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1710 | return; |
1711 | } | |
a1605869 | 1712 | #endif |
49309057 | 1713 | |
252b5132 RH |
1714 | s->sy_value.X_op = O_constant; |
1715 | s->sy_value.X_add_number = (offsetT) val; | |
1716 | s->sy_value.X_unsigned = 0; | |
1717 | } | |
1718 | ||
1719 | void | |
1720 | copy_symbol_attributes (dest, src) | |
1721 | symbolS *dest, *src; | |
1722 | { | |
49309057 | 1723 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1724 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1725 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1726 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1727 | |
252b5132 RH |
1728 | #ifdef BFD_ASSEMBLER |
1729 | /* In an expression, transfer the settings of these flags. | |
1730 | The user can override later, of course. */ | |
1731 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1732 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1733 | #endif | |
1734 | ||
1735 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1736 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1737 | #endif | |
1738 | } | |
1739 | ||
1740 | #ifdef BFD_ASSEMBLER | |
1741 | ||
1742 | int | |
1743 | S_IS_FUNCTION (s) | |
1744 | symbolS *s; | |
1745 | { | |
49309057 ILT |
1746 | flagword flags; |
1747 | ||
1748 | if (LOCAL_SYMBOL_CHECK (s)) | |
1749 | return 0; | |
1750 | ||
1751 | flags = s->bsym->flags; | |
252b5132 RH |
1752 | |
1753 | return (flags & BSF_FUNCTION) != 0; | |
1754 | } | |
1755 | ||
1756 | int | |
1757 | S_IS_EXTERNAL (s) | |
1758 | symbolS *s; | |
1759 | { | |
49309057 ILT |
1760 | flagword flags; |
1761 | ||
1762 | if (LOCAL_SYMBOL_CHECK (s)) | |
1763 | return 0; | |
1764 | ||
1765 | flags = s->bsym->flags; | |
252b5132 | 1766 | |
7c743825 | 1767 | /* Sanity check. */ |
252b5132 RH |
1768 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1769 | abort (); | |
1770 | ||
1771 | return (flags & BSF_GLOBAL) != 0; | |
1772 | } | |
1773 | ||
1774 | int | |
1775 | S_IS_WEAK (s) | |
1776 | symbolS *s; | |
1777 | { | |
49309057 ILT |
1778 | if (LOCAL_SYMBOL_CHECK (s)) |
1779 | return 0; | |
252b5132 RH |
1780 | return (s->bsym->flags & BSF_WEAK) != 0; |
1781 | } | |
1782 | ||
1783 | int | |
1784 | S_IS_COMMON (s) | |
1785 | symbolS *s; | |
1786 | { | |
49309057 ILT |
1787 | if (LOCAL_SYMBOL_CHECK (s)) |
1788 | return 0; | |
252b5132 RH |
1789 | return bfd_is_com_section (s->bsym->section); |
1790 | } | |
1791 | ||
1792 | int | |
1793 | S_IS_DEFINED (s) | |
1794 | symbolS *s; | |
1795 | { | |
49309057 ILT |
1796 | if (LOCAL_SYMBOL_CHECK (s)) |
1797 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1798 | return s->bsym->section != undefined_section; |
1799 | } | |
1800 | ||
a161fe53 AM |
1801 | |
1802 | #ifndef EXTERN_FORCE_RELOC | |
1803 | #define EXTERN_FORCE_RELOC IS_ELF | |
1804 | #endif | |
1805 | ||
1806 | /* Return true for symbols that should not be reduced to section | |
1807 | symbols or eliminated from expressions, because they may be | |
1808 | overridden by the linker. */ | |
1809 | int | |
1810 | S_FORCE_RELOC (s) | |
1811 | symbolS *s; | |
1812 | { | |
1813 | if (LOCAL_SYMBOL_CHECK (s)) | |
1814 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
1815 | ||
1816 | return ((s->bsym->flags & BSF_WEAK) != 0 | |
1817 | || (EXTERN_FORCE_RELOC | |
1818 | && (s->bsym->flags & BSF_GLOBAL) != 0) | |
1819 | || s->bsym->section == undefined_section | |
1820 | || bfd_is_com_section (s->bsym->section)); | |
1821 | } | |
1822 | ||
252b5132 RH |
1823 | int |
1824 | S_IS_DEBUG (s) | |
1825 | symbolS *s; | |
1826 | { | |
49309057 ILT |
1827 | if (LOCAL_SYMBOL_CHECK (s)) |
1828 | return 0; | |
252b5132 RH |
1829 | if (s->bsym->flags & BSF_DEBUGGING) |
1830 | return 1; | |
1831 | return 0; | |
1832 | } | |
1833 | ||
1834 | int | |
1835 | S_IS_LOCAL (s) | |
1836 | symbolS *s; | |
1837 | { | |
49309057 | 1838 | flagword flags; |
252b5132 RH |
1839 | const char *name; |
1840 | ||
49309057 ILT |
1841 | if (LOCAL_SYMBOL_CHECK (s)) |
1842 | return 1; | |
1843 | ||
1844 | flags = s->bsym->flags; | |
1845 | ||
7c743825 | 1846 | /* Sanity check. */ |
252b5132 RH |
1847 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1848 | abort (); | |
1849 | ||
1850 | if (bfd_get_section (s->bsym) == reg_section) | |
1851 | return 1; | |
1852 | ||
1853 | if (flag_strip_local_absolute | |
1854 | && (flags & BSF_GLOBAL) == 0 | |
1855 | && bfd_get_section (s->bsym) == absolute_section) | |
1856 | return 1; | |
1857 | ||
1858 | name = S_GET_NAME (s); | |
1859 | return (name != NULL | |
1860 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1861 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1862 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1863 | || (! flag_keep_locals |
1864 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1865 | || (flag_mri | |
1866 | && name[0] == '?' | |
1867 | && name[1] == '?'))))); | |
1868 | } | |
1869 | ||
1870 | int | |
1871 | S_IS_EXTERN (s) | |
1872 | symbolS *s; | |
1873 | { | |
1874 | return S_IS_EXTERNAL (s); | |
1875 | } | |
1876 | ||
1877 | int | |
1878 | S_IS_STABD (s) | |
1879 | symbolS *s; | |
1880 | { | |
1881 | return S_GET_NAME (s) == 0; | |
1882 | } | |
1883 | ||
9758f3fc | 1884 | const char * |
252b5132 RH |
1885 | S_GET_NAME (s) |
1886 | symbolS *s; | |
1887 | { | |
49309057 ILT |
1888 | if (LOCAL_SYMBOL_CHECK (s)) |
1889 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1890 | return s->bsym->name; |
1891 | } | |
1892 | ||
1893 | segT | |
1894 | S_GET_SEGMENT (s) | |
1895 | symbolS *s; | |
1896 | { | |
49309057 ILT |
1897 | if (LOCAL_SYMBOL_CHECK (s)) |
1898 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1899 | return s->bsym->section; |
1900 | } | |
1901 | ||
1902 | void | |
1903 | S_SET_SEGMENT (s, seg) | |
1904 | symbolS *s; | |
1905 | segT seg; | |
1906 | { | |
1907 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1908 | faults assigning back to const global symbols such as *ABS*, but it | |
1909 | shouldn't happen anyway. */ | |
1910 | ||
49309057 ILT |
1911 | if (LOCAL_SYMBOL_CHECK (s)) |
1912 | { | |
1913 | if (seg == reg_section) | |
1914 | s = local_symbol_convert ((struct local_symbol *) s); | |
1915 | else | |
1916 | { | |
1917 | ((struct local_symbol *) s)->lsy_section = seg; | |
1918 | return; | |
1919 | } | |
1920 | } | |
1921 | ||
252b5132 RH |
1922 | if (s->bsym->flags & BSF_SECTION_SYM) |
1923 | { | |
1924 | if (s->bsym->section != seg) | |
7c743825 | 1925 | abort (); |
252b5132 RH |
1926 | } |
1927 | else | |
1928 | s->bsym->section = seg; | |
1929 | } | |
1930 | ||
1931 | void | |
1932 | S_SET_EXTERNAL (s) | |
1933 | symbolS *s; | |
1934 | { | |
49309057 ILT |
1935 | if (LOCAL_SYMBOL_CHECK (s)) |
1936 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1937 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1938 | { | |
1939 | /* Let .weak override .global. */ | |
1940 | return; | |
1941 | } | |
4d7c34bf NC |
1942 | if (s->bsym->flags & BSF_SECTION_SYM) |
1943 | { | |
1944 | char * file; | |
1945 | unsigned int line; | |
d1a6c242 | 1946 | |
4d7c34bf NC |
1947 | /* Do not reassign section symbols. */ |
1948 | as_where (& file, & line); | |
1949 | as_warn_where (file, line, | |
0e389e77 | 1950 | _("section symbols are already global")); |
4d7c34bf NC |
1951 | return; |
1952 | } | |
252b5132 | 1953 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1954 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
252b5132 RH |
1955 | } |
1956 | ||
1957 | void | |
1958 | S_CLEAR_EXTERNAL (s) | |
1959 | symbolS *s; | |
1960 | { | |
49309057 ILT |
1961 | if (LOCAL_SYMBOL_CHECK (s)) |
1962 | return; | |
252b5132 RH |
1963 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1964 | { | |
1965 | /* Let .weak override. */ | |
1966 | return; | |
1967 | } | |
1968 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1969 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1970 | } |
1971 | ||
1972 | void | |
1973 | S_SET_WEAK (s) | |
1974 | symbolS *s; | |
1975 | { | |
49309057 ILT |
1976 | if (LOCAL_SYMBOL_CHECK (s)) |
1977 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1978 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1979 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1980 | } |
1981 | ||
00f7efb6 JJ |
1982 | void |
1983 | S_SET_THREAD_LOCAL (s) | |
1984 | symbolS *s; | |
1985 | { | |
1986 | if (LOCAL_SYMBOL_CHECK (s)) | |
1987 | s = local_symbol_convert ((struct local_symbol *) s); | |
1988 | if (bfd_is_com_section (s->bsym->section) | |
1989 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
1990 | return; | |
1991 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
1992 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
1993 | as_bad (_("Accessing function `%s' as thread-local object"), | |
1994 | S_GET_NAME (s)); | |
1995 | else if (! bfd_is_und_section (s->bsym->section) | |
1996 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
1997 | as_bad (_("Accessing `%s' as thread-local object"), | |
1998 | S_GET_NAME (s)); | |
1999 | } | |
2000 | ||
252b5132 RH |
2001 | void |
2002 | S_SET_NAME (s, name) | |
2003 | symbolS *s; | |
2004 | char *name; | |
2005 | { | |
49309057 ILT |
2006 | if (LOCAL_SYMBOL_CHECK (s)) |
2007 | { | |
2008 | ((struct local_symbol *) s)->lsy_name = name; | |
2009 | return; | |
2010 | } | |
252b5132 RH |
2011 | s->bsym->name = name; |
2012 | } | |
2013 | #endif /* BFD_ASSEMBLER */ | |
2014 | ||
49309057 ILT |
2015 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
2016 | ||
2017 | /* Return the previous symbol in a chain. */ | |
2018 | ||
2019 | symbolS * | |
2020 | symbol_previous (s) | |
2021 | symbolS *s; | |
2022 | { | |
2023 | if (LOCAL_SYMBOL_CHECK (s)) | |
2024 | abort (); | |
2025 | return s->sy_previous; | |
2026 | } | |
2027 | ||
2028 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
2029 | ||
2030 | /* Return the next symbol in a chain. */ | |
2031 | ||
2032 | symbolS * | |
2033 | symbol_next (s) | |
2034 | symbolS *s; | |
2035 | { | |
2036 | if (LOCAL_SYMBOL_CHECK (s)) | |
2037 | abort (); | |
2038 | return s->sy_next; | |
2039 | } | |
2040 | ||
2041 | /* Return a pointer to the value of a symbol as an expression. */ | |
2042 | ||
2043 | expressionS * | |
2044 | symbol_get_value_expression (s) | |
2045 | symbolS *s; | |
2046 | { | |
2047 | if (LOCAL_SYMBOL_CHECK (s)) | |
2048 | s = local_symbol_convert ((struct local_symbol *) s); | |
2049 | return &s->sy_value; | |
2050 | } | |
2051 | ||
2052 | /* Set the value of a symbol to an expression. */ | |
2053 | ||
2054 | void | |
2055 | symbol_set_value_expression (s, exp) | |
2056 | symbolS *s; | |
2057 | const expressionS *exp; | |
2058 | { | |
2059 | if (LOCAL_SYMBOL_CHECK (s)) | |
2060 | s = local_symbol_convert ((struct local_symbol *) s); | |
2061 | s->sy_value = *exp; | |
2062 | } | |
2063 | ||
2064 | /* Set the frag of a symbol. */ | |
2065 | ||
2066 | void | |
2067 | symbol_set_frag (s, f) | |
2068 | symbolS *s; | |
2069 | fragS *f; | |
2070 | { | |
a1605869 | 2071 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2072 | if (LOCAL_SYMBOL_CHECK (s)) |
2073 | { | |
2074 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2075 | return; | |
2076 | } | |
a1605869 | 2077 | #endif |
49309057 ILT |
2078 | s->sy_frag = f; |
2079 | } | |
2080 | ||
2081 | /* Return the frag of a symbol. */ | |
2082 | ||
2083 | fragS * | |
2084 | symbol_get_frag (s) | |
2085 | symbolS *s; | |
2086 | { | |
a1605869 | 2087 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2088 | if (LOCAL_SYMBOL_CHECK (s)) |
2089 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 2090 | #endif |
49309057 ILT |
2091 | return s->sy_frag; |
2092 | } | |
2093 | ||
2094 | /* Mark a symbol as having been used. */ | |
2095 | ||
2096 | void | |
2097 | symbol_mark_used (s) | |
2098 | symbolS *s; | |
2099 | { | |
2100 | if (LOCAL_SYMBOL_CHECK (s)) | |
2101 | return; | |
2102 | s->sy_used = 1; | |
2103 | } | |
2104 | ||
2105 | /* Clear the mark of whether a symbol has been used. */ | |
2106 | ||
2107 | void | |
2108 | symbol_clear_used (s) | |
2109 | symbolS *s; | |
2110 | { | |
2111 | if (LOCAL_SYMBOL_CHECK (s)) | |
2112 | s = local_symbol_convert ((struct local_symbol *) s); | |
2113 | s->sy_used = 0; | |
2114 | } | |
2115 | ||
2116 | /* Return whether a symbol has been used. */ | |
2117 | ||
2118 | int | |
2119 | symbol_used_p (s) | |
2120 | symbolS *s; | |
2121 | { | |
2122 | if (LOCAL_SYMBOL_CHECK (s)) | |
2123 | return 1; | |
2124 | return s->sy_used; | |
2125 | } | |
2126 | ||
2127 | /* Mark a symbol as having been used in a reloc. */ | |
2128 | ||
2129 | void | |
2130 | symbol_mark_used_in_reloc (s) | |
2131 | symbolS *s; | |
2132 | { | |
2133 | if (LOCAL_SYMBOL_CHECK (s)) | |
2134 | s = local_symbol_convert ((struct local_symbol *) s); | |
2135 | s->sy_used_in_reloc = 1; | |
2136 | } | |
2137 | ||
2138 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2139 | ||
2140 | void | |
2141 | symbol_clear_used_in_reloc (s) | |
2142 | symbolS *s; | |
2143 | { | |
2144 | if (LOCAL_SYMBOL_CHECK (s)) | |
2145 | return; | |
2146 | s->sy_used_in_reloc = 0; | |
2147 | } | |
2148 | ||
2149 | /* Return whether a symbol has been used in a reloc. */ | |
2150 | ||
2151 | int | |
2152 | symbol_used_in_reloc_p (s) | |
2153 | symbolS *s; | |
2154 | { | |
2155 | if (LOCAL_SYMBOL_CHECK (s)) | |
2156 | return 0; | |
2157 | return s->sy_used_in_reloc; | |
2158 | } | |
2159 | ||
2160 | /* Mark a symbol as an MRI common symbol. */ | |
2161 | ||
2162 | void | |
2163 | symbol_mark_mri_common (s) | |
2164 | symbolS *s; | |
2165 | { | |
2166 | if (LOCAL_SYMBOL_CHECK (s)) | |
2167 | s = local_symbol_convert ((struct local_symbol *) s); | |
2168 | s->sy_mri_common = 1; | |
2169 | } | |
2170 | ||
2171 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2172 | ||
2173 | void | |
2174 | symbol_clear_mri_common (s) | |
2175 | symbolS *s; | |
2176 | { | |
2177 | if (LOCAL_SYMBOL_CHECK (s)) | |
2178 | return; | |
2179 | s->sy_mri_common = 0; | |
2180 | } | |
2181 | ||
2182 | /* Return whether a symbol is an MRI common symbol. */ | |
2183 | ||
2184 | int | |
2185 | symbol_mri_common_p (s) | |
2186 | symbolS *s; | |
2187 | { | |
2188 | if (LOCAL_SYMBOL_CHECK (s)) | |
2189 | return 0; | |
2190 | return s->sy_mri_common; | |
2191 | } | |
2192 | ||
2193 | /* Mark a symbol as having been written. */ | |
2194 | ||
2195 | void | |
2196 | symbol_mark_written (s) | |
2197 | symbolS *s; | |
2198 | { | |
2199 | if (LOCAL_SYMBOL_CHECK (s)) | |
2200 | return; | |
2201 | s->written = 1; | |
2202 | } | |
2203 | ||
2204 | /* Clear the mark of whether a symbol has been written. */ | |
2205 | ||
2206 | void | |
2207 | symbol_clear_written (s) | |
2208 | symbolS *s; | |
2209 | { | |
2210 | if (LOCAL_SYMBOL_CHECK (s)) | |
2211 | return; | |
2212 | s->written = 0; | |
2213 | } | |
2214 | ||
2215 | /* Return whether a symbol has been written. */ | |
2216 | ||
2217 | int | |
2218 | symbol_written_p (s) | |
2219 | symbolS *s; | |
2220 | { | |
2221 | if (LOCAL_SYMBOL_CHECK (s)) | |
2222 | return 0; | |
2223 | return s->written; | |
2224 | } | |
2225 | ||
2226 | /* Mark a symbol has having been resolved. */ | |
2227 | ||
2228 | void | |
2229 | symbol_mark_resolved (s) | |
2230 | symbolS *s; | |
2231 | { | |
a1605869 | 2232 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2233 | if (LOCAL_SYMBOL_CHECK (s)) |
2234 | { | |
2235 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2236 | return; | |
2237 | } | |
a1605869 | 2238 | #endif |
49309057 ILT |
2239 | s->sy_resolved = 1; |
2240 | } | |
2241 | ||
2242 | /* Return whether a symbol has been resolved. */ | |
2243 | ||
2244 | int | |
2245 | symbol_resolved_p (s) | |
2246 | symbolS *s; | |
2247 | { | |
a1605869 | 2248 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2249 | if (LOCAL_SYMBOL_CHECK (s)) |
2250 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2251 | #endif |
49309057 ILT |
2252 | return s->sy_resolved; |
2253 | } | |
2254 | ||
2255 | /* Return whether a symbol is a section symbol. */ | |
2256 | ||
2257 | int | |
2258 | symbol_section_p (s) | |
a04b544b | 2259 | symbolS *s ATTRIBUTE_UNUSED; |
49309057 ILT |
2260 | { |
2261 | if (LOCAL_SYMBOL_CHECK (s)) | |
2262 | return 0; | |
2263 | #ifdef BFD_ASSEMBLER | |
2264 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2265 | #else | |
7c743825 | 2266 | /* FIXME. */ |
49309057 ILT |
2267 | return 0; |
2268 | #endif | |
2269 | } | |
2270 | ||
2271 | /* Return whether a symbol is equated to another symbol. */ | |
2272 | ||
2273 | int | |
2274 | symbol_equated_p (s) | |
2275 | symbolS *s; | |
2276 | { | |
2277 | if (LOCAL_SYMBOL_CHECK (s)) | |
2278 | return 0; | |
2279 | return s->sy_value.X_op == O_symbol; | |
2280 | } | |
2281 | ||
e0890092 AM |
2282 | /* Return whether a symbol is equated to another symbol, and should be |
2283 | treated specially when writing out relocs. */ | |
2284 | ||
2285 | int | |
2286 | symbol_equated_reloc_p (s) | |
2287 | symbolS *s; | |
2288 | { | |
2289 | if (LOCAL_SYMBOL_CHECK (s)) | |
2290 | return 0; | |
2291 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2292 | resolve_symbol_value to flag expression syms that have been | |
2293 | equated. */ | |
2294 | return (s->sy_value.X_op == O_symbol | |
2295 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) | |
2296 | || ! S_IS_DEFINED (s) | |
2297 | || S_IS_COMMON (s))); | |
2298 | } | |
2299 | ||
49309057 ILT |
2300 | /* Return whether a symbol has a constant value. */ |
2301 | ||
2302 | int | |
2303 | symbol_constant_p (s) | |
2304 | symbolS *s; | |
2305 | { | |
2306 | if (LOCAL_SYMBOL_CHECK (s)) | |
2307 | return 1; | |
2308 | return s->sy_value.X_op == O_constant; | |
2309 | } | |
2310 | ||
2311 | #ifdef BFD_ASSEMBLER | |
2312 | ||
2313 | /* Return the BFD symbol for a symbol. */ | |
2314 | ||
2315 | asymbol * | |
2316 | symbol_get_bfdsym (s) | |
2317 | symbolS *s; | |
2318 | { | |
2319 | if (LOCAL_SYMBOL_CHECK (s)) | |
2320 | s = local_symbol_convert ((struct local_symbol *) s); | |
2321 | return s->bsym; | |
2322 | } | |
2323 | ||
2324 | /* Set the BFD symbol for a symbol. */ | |
2325 | ||
2326 | void | |
2327 | symbol_set_bfdsym (s, bsym) | |
2328 | symbolS *s; | |
2329 | asymbol *bsym; | |
2330 | { | |
2331 | if (LOCAL_SYMBOL_CHECK (s)) | |
2332 | s = local_symbol_convert ((struct local_symbol *) s); | |
2333 | s->bsym = bsym; | |
2334 | } | |
2335 | ||
2336 | #endif /* BFD_ASSEMBLER */ | |
2337 | ||
2338 | #ifdef OBJ_SYMFIELD_TYPE | |
2339 | ||
2340 | /* Get a pointer to the object format information for a symbol. */ | |
2341 | ||
2342 | OBJ_SYMFIELD_TYPE * | |
2343 | symbol_get_obj (s) | |
2344 | symbolS *s; | |
2345 | { | |
2346 | if (LOCAL_SYMBOL_CHECK (s)) | |
2347 | s = local_symbol_convert ((struct local_symbol *) s); | |
2348 | return &s->sy_obj; | |
2349 | } | |
2350 | ||
2351 | /* Set the object format information for a symbol. */ | |
2352 | ||
2353 | void | |
2354 | symbol_set_obj (s, o) | |
2355 | symbolS *s; | |
2356 | OBJ_SYMFIELD_TYPE *o; | |
2357 | { | |
2358 | if (LOCAL_SYMBOL_CHECK (s)) | |
2359 | s = local_symbol_convert ((struct local_symbol *) s); | |
2360 | s->sy_obj = *o; | |
2361 | } | |
2362 | ||
2363 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2364 | ||
2365 | #ifdef TC_SYMFIELD_TYPE | |
2366 | ||
2367 | /* Get a pointer to the processor information for a symbol. */ | |
2368 | ||
2369 | TC_SYMFIELD_TYPE * | |
2370 | symbol_get_tc (s) | |
2371 | symbolS *s; | |
2372 | { | |
2373 | if (LOCAL_SYMBOL_CHECK (s)) | |
2374 | s = local_symbol_convert ((struct local_symbol *) s); | |
2375 | return &s->sy_tc; | |
2376 | } | |
2377 | ||
2378 | /* Set the processor information for a symbol. */ | |
2379 | ||
2380 | void | |
bf27257e | 2381 | symbol_set_tc (s, o) |
49309057 ILT |
2382 | symbolS *s; |
2383 | TC_SYMFIELD_TYPE *o; | |
2384 | { | |
2385 | if (LOCAL_SYMBOL_CHECK (s)) | |
2386 | s = local_symbol_convert ((struct local_symbol *) s); | |
2387 | s->sy_tc = *o; | |
2388 | } | |
2389 | ||
2390 | #endif /* TC_SYMFIELD_TYPE */ | |
2391 | ||
252b5132 RH |
2392 | void |
2393 | symbol_begin () | |
2394 | { | |
2395 | symbol_lastP = NULL; | |
7c743825 | 2396 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2397 | sy_hash = hash_new (); |
49309057 ILT |
2398 | #ifdef BFD_ASSEMBLER |
2399 | local_hash = hash_new (); | |
2400 | #endif | |
252b5132 RH |
2401 | |
2402 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2403 | #ifdef BFD_ASSEMBLER | |
2404 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2405 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2406 | #endif | |
2407 | #else | |
7c743825 | 2408 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2409 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2410 | #endif | |
2411 | abs_symbol.sy_value.X_op = O_constant; | |
2412 | abs_symbol.sy_frag = &zero_address_frag; | |
2413 | ||
2414 | if (LOCAL_LABELS_FB) | |
2415 | fb_label_init (); | |
2416 | } | |
252b5132 RH |
2417 | \f |
2418 | int indent_level; | |
2419 | ||
2420 | /* Maximum indent level. | |
2421 | Available for modification inside a gdb session. */ | |
2422 | int max_indent_level = 8; | |
2423 | ||
2424 | #if 0 | |
2425 | ||
2426 | static void | |
2427 | indent () | |
2428 | { | |
2429 | printf ("%*s", indent_level * 4, ""); | |
2430 | } | |
2431 | ||
2432 | #endif | |
2433 | ||
2434 | void | |
2435 | print_symbol_value_1 (file, sym) | |
2436 | FILE *file; | |
2437 | symbolS *sym; | |
2438 | { | |
2439 | const char *name = S_GET_NAME (sym); | |
2440 | if (!name || !name[0]) | |
2441 | name = "(unnamed)"; | |
2442 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2443 | |
2444 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2445 | { | |
a1605869 | 2446 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2447 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2448 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2449 | && local_symbol_get_frag (locsym) != NULL) | |
2450 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2451 | if (local_symbol_resolved_p (locsym)) | |
2452 | fprintf (file, " resolved"); | |
2453 | fprintf (file, " local"); | |
a1605869 | 2454 | #endif |
49309057 ILT |
2455 | } |
2456 | else | |
2457 | { | |
2458 | if (sym->sy_frag != &zero_address_frag) | |
2459 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2460 | if (sym->written) | |
2461 | fprintf (file, " written"); | |
2462 | if (sym->sy_resolved) | |
2463 | fprintf (file, " resolved"); | |
2464 | else if (sym->sy_resolving) | |
2465 | fprintf (file, " resolving"); | |
2466 | if (sym->sy_used_in_reloc) | |
2467 | fprintf (file, " used-in-reloc"); | |
2468 | if (sym->sy_used) | |
2469 | fprintf (file, " used"); | |
2470 | if (S_IS_LOCAL (sym)) | |
2471 | fprintf (file, " local"); | |
2472 | if (S_IS_EXTERN (sym)) | |
2473 | fprintf (file, " extern"); | |
2474 | if (S_IS_DEBUG (sym)) | |
2475 | fprintf (file, " debug"); | |
2476 | if (S_IS_DEFINED (sym)) | |
2477 | fprintf (file, " defined"); | |
2478 | } | |
252b5132 | 2479 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2480 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2481 | { |
2482 | segT s = S_GET_SEGMENT (sym); | |
2483 | ||
2484 | if (s != undefined_section | |
411863a4 | 2485 | && s != expr_section) |
252b5132 RH |
2486 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); |
2487 | } | |
2488 | else if (indent_level < max_indent_level | |
2489 | && S_GET_SEGMENT (sym) != undefined_section) | |
2490 | { | |
2491 | indent_level++; | |
2492 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2493 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2494 | if (LOCAL_SYMBOL_CHECK (sym)) |
2495 | fprintf (file, "constant %lx", | |
bd780143 | 2496 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2497 | else |
a1605869 | 2498 | #endif |
49309057 | 2499 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2500 | fprintf (file, ">"); |
2501 | indent_level--; | |
2502 | } | |
2503 | fflush (file); | |
2504 | } | |
2505 | ||
2506 | void | |
2507 | print_symbol_value (sym) | |
2508 | symbolS *sym; | |
2509 | { | |
2510 | indent_level = 0; | |
2511 | print_symbol_value_1 (stderr, sym); | |
2512 | fprintf (stderr, "\n"); | |
2513 | } | |
2514 | ||
2515 | static void | |
2516 | print_binary (file, name, exp) | |
2517 | FILE *file; | |
7c743825 | 2518 | const char *name; |
252b5132 RH |
2519 | expressionS *exp; |
2520 | { | |
2521 | indent_level++; | |
2522 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2523 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2524 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2525 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2526 | fprintf (file, ">"); | |
2527 | indent_level--; | |
2528 | } | |
2529 | ||
2530 | void | |
2531 | print_expr_1 (file, exp) | |
2532 | FILE *file; | |
2533 | expressionS *exp; | |
2534 | { | |
2535 | fprintf (file, "expr %lx ", (long) exp); | |
2536 | switch (exp->X_op) | |
2537 | { | |
2538 | case O_illegal: | |
2539 | fprintf (file, "illegal"); | |
2540 | break; | |
2541 | case O_absent: | |
2542 | fprintf (file, "absent"); | |
2543 | break; | |
2544 | case O_constant: | |
2545 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2546 | break; | |
2547 | case O_symbol: | |
2548 | indent_level++; | |
2549 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2550 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2551 | fprintf (file, ">"); | |
2552 | maybe_print_addnum: | |
2553 | if (exp->X_add_number) | |
2554 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2555 | (long) exp->X_add_number); | |
2556 | indent_level--; | |
2557 | break; | |
2558 | case O_register: | |
2559 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2560 | break; | |
2561 | case O_big: | |
2562 | fprintf (file, "big"); | |
2563 | break; | |
2564 | case O_uminus: | |
2565 | fprintf (file, "uminus -<"); | |
2566 | indent_level++; | |
2567 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2568 | fprintf (file, ">"); | |
2569 | goto maybe_print_addnum; | |
2570 | case O_bit_not: | |
2571 | fprintf (file, "bit_not"); | |
2572 | break; | |
2573 | case O_multiply: | |
2574 | print_binary (file, "multiply", exp); | |
2575 | break; | |
2576 | case O_divide: | |
2577 | print_binary (file, "divide", exp); | |
2578 | break; | |
2579 | case O_modulus: | |
2580 | print_binary (file, "modulus", exp); | |
2581 | break; | |
2582 | case O_left_shift: | |
2583 | print_binary (file, "lshift", exp); | |
2584 | break; | |
2585 | case O_right_shift: | |
2586 | print_binary (file, "rshift", exp); | |
2587 | break; | |
2588 | case O_bit_inclusive_or: | |
2589 | print_binary (file, "bit_ior", exp); | |
2590 | break; | |
2591 | case O_bit_exclusive_or: | |
2592 | print_binary (file, "bit_xor", exp); | |
2593 | break; | |
2594 | case O_bit_and: | |
2595 | print_binary (file, "bit_and", exp); | |
2596 | break; | |
2597 | case O_eq: | |
2598 | print_binary (file, "eq", exp); | |
2599 | break; | |
2600 | case O_ne: | |
2601 | print_binary (file, "ne", exp); | |
2602 | break; | |
2603 | case O_lt: | |
2604 | print_binary (file, "lt", exp); | |
2605 | break; | |
2606 | case O_le: | |
2607 | print_binary (file, "le", exp); | |
2608 | break; | |
2609 | case O_ge: | |
2610 | print_binary (file, "ge", exp); | |
2611 | break; | |
2612 | case O_gt: | |
2613 | print_binary (file, "gt", exp); | |
2614 | break; | |
2615 | case O_logical_and: | |
2616 | print_binary (file, "logical_and", exp); | |
2617 | break; | |
2618 | case O_logical_or: | |
2619 | print_binary (file, "logical_or", exp); | |
2620 | break; | |
2621 | case O_add: | |
2622 | indent_level++; | |
2623 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2624 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2625 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2626 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2627 | fprintf (file, ">"); | |
2628 | goto maybe_print_addnum; | |
2629 | case O_subtract: | |
2630 | indent_level++; | |
2631 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2632 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2633 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2634 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2635 | fprintf (file, ">"); | |
2636 | goto maybe_print_addnum; | |
2637 | default: | |
2638 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2639 | break; | |
2640 | } | |
2641 | fflush (stdout); | |
2642 | } | |
2643 | ||
2644 | void | |
2645 | print_expr (exp) | |
2646 | expressionS *exp; | |
2647 | { | |
2648 | print_expr_1 (stderr, exp); | |
2649 | fprintf (stderr, "\n"); | |
2650 | } | |
2651 | ||
2652 | void | |
2653 | symbol_print_statistics (file) | |
2654 | FILE *file; | |
2655 | { | |
2656 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2657 | #ifdef BFD_ASSEMBLER |
2658 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2659 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2660 | local_symbol_count, local_symbol_conversion_count); | |
2661 | #endif | |
252b5132 | 2662 | } |