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, |
22fe14ad | 3 | 1999, 2000, 2001, 2002, 2003, 2004 |
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 | ||
74937d39 KH |
63 | static char *save_symbol_name (const char *); |
64 | static void fb_label_init (void); | |
65 | static long dollar_label_instance (long); | |
66 | static long fb_label_instance (long); | |
252b5132 | 67 | |
74937d39 KH |
68 | static void print_binary (FILE *, const char *, expressionS *); |
69 | static void report_op_error (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 * | |
74937d39 | 81 | symbol_new (const char *name, segT segment, valueT valu, fragS *frag) |
252b5132 RH |
82 | { |
83 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
84 | ||
7c743825 | 85 | /* Link to end of symbol chain. */ |
252b5132 RH |
86 | #ifdef BFD_ASSEMBLER |
87 | { | |
88 | extern int symbol_table_frozen; | |
89 | if (symbol_table_frozen) | |
90 | abort (); | |
91 | } | |
92 | #endif | |
93 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
94 | ||
95 | return symbolP; | |
96 | } | |
97 | ||
49309057 ILT |
98 | /* Save a symbol name on a permanent obstack, and convert it according |
99 | to the object file format. */ | |
100 | ||
101 | static char * | |
74937d39 | 102 | save_symbol_name (const char *name) |
252b5132 RH |
103 | { |
104 | unsigned int name_length; | |
49309057 | 105 | char *ret; |
252b5132 | 106 | |
7c743825 | 107 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 108 | obstack_grow (¬es, name, name_length); |
49309057 ILT |
109 | ret = obstack_finish (¬es); |
110 | ||
252b5132 | 111 | #ifdef STRIP_UNDERSCORE |
49309057 ILT |
112 | if (ret[0] == '_') |
113 | ++ret; | |
252b5132 RH |
114 | #endif |
115 | ||
116 | #ifdef tc_canonicalize_symbol_name | |
49309057 | 117 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
118 | #endif |
119 | ||
120 | if (! symbols_case_sensitive) | |
121 | { | |
3882b010 | 122 | char *s; |
252b5132 | 123 | |
3882b010 L |
124 | for (s = ret; *s != '\0'; s++) |
125 | *s = TOUPPER (*s); | |
252b5132 RH |
126 | } |
127 | ||
49309057 ILT |
128 | return ret; |
129 | } | |
130 | ||
131 | symbolS * | |
74937d39 KH |
132 | symbol_create (const char *name, /* It is copied, the caller can destroy/modify. */ |
133 | segT segment, /* Segment identifier (SEG_<something>). */ | |
134 | valueT valu, /* Symbol value. */ | |
135 | fragS *frag /* Associated fragment. */) | |
49309057 ILT |
136 | { |
137 | char *preserved_copy_of_name; | |
138 | symbolS *symbolP; | |
139 | ||
140 | preserved_copy_of_name = save_symbol_name (name); | |
141 | ||
252b5132 RH |
142 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
143 | ||
7c743825 | 144 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
145 | memset (symbolP, 0, sizeof (symbolS)); |
146 | ||
147 | #ifdef BFD_ASSEMBLER | |
148 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); | |
149 | if (symbolP->bsym == NULL) | |
150 | as_perror ("%s", "bfd_make_empty_symbol"); | |
151 | symbolP->bsym->udata.p = (PTR) symbolP; | |
152 | #endif | |
153 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
154 | ||
155 | S_SET_SEGMENT (symbolP, segment); | |
156 | S_SET_VALUE (symbolP, valu); | |
157 | symbol_clear_list_pointers (symbolP); | |
158 | ||
159 | symbolP->sy_frag = frag; | |
160 | #ifndef BFD_ASSEMBLER | |
161 | symbolP->sy_number = ~0; | |
162 | symbolP->sy_name_offset = (unsigned int) ~0; | |
163 | #endif | |
164 | ||
165 | obj_symbol_new_hook (symbolP); | |
166 | ||
167 | #ifdef tc_symbol_new_hook | |
168 | tc_symbol_new_hook (symbolP); | |
169 | #endif | |
170 | ||
171 | return symbolP; | |
172 | } | |
173 | \f | |
49309057 ILT |
174 | #ifdef BFD_ASSEMBLER |
175 | ||
176 | /* Local symbol support. If we can get away with it, we keep only a | |
177 | small amount of information for local symbols. */ | |
178 | ||
74937d39 | 179 | static symbolS *local_symbol_convert (struct local_symbol *); |
49309057 ILT |
180 | |
181 | /* Used for statistics. */ | |
182 | ||
183 | static unsigned long local_symbol_count; | |
184 | static unsigned long local_symbol_conversion_count; | |
185 | ||
186 | /* This macro is called with a symbol argument passed by reference. | |
187 | It returns whether this is a local symbol. If necessary, it | |
188 | changes its argument to the real symbol. */ | |
189 | ||
190 | #define LOCAL_SYMBOL_CHECK(s) \ | |
191 | (s->bsym == NULL \ | |
192 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
193 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
194 | 0) \ | |
195 | : 1) \ | |
196 | : 0) | |
197 | ||
198 | /* Create a local symbol and insert it into the local hash table. */ | |
199 | ||
54cfded0 | 200 | struct local_symbol * |
74937d39 | 201 | local_symbol_make (const char *name, segT section, valueT value, fragS *frag) |
49309057 ILT |
202 | { |
203 | char *name_copy; | |
204 | struct local_symbol *ret; | |
205 | ||
206 | ++local_symbol_count; | |
207 | ||
208 | name_copy = save_symbol_name (name); | |
209 | ||
210 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
211 | ret->lsy_marker = NULL; | |
212 | ret->lsy_name = name_copy; | |
213 | ret->lsy_section = section; | |
214 | local_symbol_set_frag (ret, frag); | |
bd780143 | 215 | ret->lsy_value = value; |
49309057 ILT |
216 | |
217 | hash_jam (local_hash, name_copy, (PTR) ret); | |
218 | ||
219 | return ret; | |
220 | } | |
221 | ||
222 | /* Convert a local symbol into a real symbol. Note that we do not | |
223 | reclaim the space used by the local symbol. */ | |
224 | ||
225 | static symbolS * | |
74937d39 | 226 | local_symbol_convert (struct local_symbol *locsym) |
49309057 ILT |
227 | { |
228 | symbolS *ret; | |
229 | ||
230 | assert (locsym->lsy_marker == NULL); | |
231 | if (local_symbol_converted_p (locsym)) | |
232 | return local_symbol_get_real_symbol (locsym); | |
233 | ||
234 | ++local_symbol_conversion_count; | |
235 | ||
bd780143 | 236 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
237 | local_symbol_get_frag (locsym)); |
238 | ||
239 | if (local_symbol_resolved_p (locsym)) | |
240 | ret->sy_resolved = 1; | |
241 | ||
242 | /* Local symbols are always either defined or used. */ | |
243 | ret->sy_used = 1; | |
244 | ||
8c5e1ccd AO |
245 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
246 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
247 | #endif | |
248 | ||
49309057 ILT |
249 | symbol_table_insert (ret); |
250 | ||
251 | local_symbol_mark_converted (locsym); | |
252 | local_symbol_set_real_symbol (locsym, ret); | |
253 | ||
254 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
255 | ||
256 | return ret; | |
257 | } | |
258 | ||
259 | #else /* ! BFD_ASSEMBLER */ | |
260 | ||
261 | #define LOCAL_SYMBOL_CHECK(s) 0 | |
262 | #define local_symbol_convert(s) ((symbolS *) s) | |
263 | ||
264 | #endif /* ! BFD_ASSEMBLER */ | |
265 | \f | |
7c743825 KH |
266 | /* We have just seen "<name>:". |
267 | Creates a struct symbol unless it already exists. | |
268 | ||
269 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 270 | |
252b5132 | 271 | symbolS * |
74937d39 KH |
272 | colon (/* Just seen "x:" - rattle symbols & frags. */ |
273 | const char *sym_name /* Symbol name, as a cannonical string. */ | |
274 | /* We copy this string: OK to alter later. */) | |
252b5132 | 275 | { |
7c743825 | 276 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 277 | |
7cf10893 | 278 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 RH |
279 | defined. */ |
280 | if (LOCAL_LABELS_DOLLAR) | |
281 | { | |
282 | int local; | |
283 | ||
284 | #ifdef BFD_ASSEMBLER | |
285 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
286 | #else | |
287 | local = LOCAL_LABEL (sym_name); | |
288 | #endif | |
289 | ||
290 | if (! local) | |
291 | dollar_label_clear (); | |
292 | } | |
293 | ||
294 | #ifndef WORKING_DOT_WORD | |
295 | if (new_broken_words) | |
296 | { | |
297 | struct broken_word *a; | |
298 | int possible_bytes; | |
299 | fragS *frag_tmp; | |
300 | char *frag_opcode; | |
301 | ||
7cf10893 NC |
302 | if (now_seg == absolute_section) |
303 | { | |
304 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
305 | return NULL; | |
306 | } | |
1d3b2b27 | 307 | |
252b5132 RH |
308 | possible_bytes = (md_short_jump_size |
309 | + new_broken_words * md_long_jump_size); | |
310 | ||
311 | frag_tmp = frag_now; | |
312 | frag_opcode = frag_var (rs_broken_word, | |
313 | possible_bytes, | |
314 | possible_bytes, | |
315 | (relax_substateT) 0, | |
316 | (symbolS *) broken_words, | |
317 | (offsetT) 0, | |
318 | NULL); | |
319 | ||
7c743825 KH |
320 | /* We want to store the pointer to where to insert the jump |
321 | table in the fr_opcode of the rs_broken_word frag. This | |
322 | requires a little hackery. */ | |
252b5132 RH |
323 | while (frag_tmp |
324 | && (frag_tmp->fr_type != rs_broken_word | |
325 | || frag_tmp->fr_opcode)) | |
326 | frag_tmp = frag_tmp->fr_next; | |
327 | know (frag_tmp); | |
328 | frag_tmp->fr_opcode = frag_opcode; | |
329 | new_broken_words = 0; | |
330 | ||
331 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
332 | a->dispfrag = frag_tmp; | |
333 | } | |
334 | #endif /* WORKING_DOT_WORD */ | |
335 | ||
336 | if ((symbolP = symbol_find (sym_name)) != 0) | |
337 | { | |
338 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
339 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
340 | return symbolP; | |
341 | #endif | |
7c743825 | 342 | /* Now check for undefined symbols. */ |
49309057 ILT |
343 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
344 | { | |
a1605869 | 345 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
346 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
347 | ||
348 | if (locsym->lsy_section != undefined_section | |
349 | && (local_symbol_get_frag (locsym) != frag_now | |
350 | || locsym->lsy_section != now_seg | |
bd780143 | 351 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 352 | { |
0e389e77 | 353 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
354 | return symbolP; |
355 | } | |
356 | ||
357 | locsym->lsy_section = now_seg; | |
358 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 359 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 360 | #endif |
49309057 ILT |
361 | } |
362 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
363 | { |
364 | if (S_GET_VALUE (symbolP) == 0) | |
365 | { | |
366 | symbolP->sy_frag = frag_now; | |
367 | #ifdef OBJ_VMS | |
7c743825 | 368 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
369 | #endif |
370 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
371 | S_SET_SEGMENT (symbolP, now_seg); | |
372 | #ifdef N_UNDF | |
373 | know (N_UNDF == 0); | |
7c743825 | 374 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
375 | |
376 | } | |
377 | else | |
378 | { | |
7c743825 KH |
379 | /* There are still several cases to check: |
380 | ||
381 | A .comm/.lcomm symbol being redefined as initialized | |
382 | data is OK | |
383 | ||
384 | A .comm/.lcomm symbol being redefined with a larger | |
385 | size is also OK | |
386 | ||
387 | This only used to be allowed on VMS gas, but Sun cc | |
388 | on the sparc also depends on it. */ | |
252b5132 RH |
389 | |
390 | if (((!S_IS_DEBUG (symbolP) | |
391 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
392 | && S_IS_EXTERNAL (symbolP)) | |
393 | || S_GET_SEGMENT (symbolP) == bss_section) | |
394 | && (now_seg == data_section | |
395 | || now_seg == S_GET_SEGMENT (symbolP))) | |
396 | { | |
7c743825 | 397 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
398 | if (now_seg != data_section) |
399 | { | |
7c743825 KH |
400 | /* New .comm for prev .comm symbol. |
401 | ||
402 | If the new size is larger we just change its | |
403 | value. If the new size is smaller, we ignore | |
404 | this symbol. */ | |
252b5132 RH |
405 | if (S_GET_VALUE (symbolP) |
406 | < ((unsigned) frag_now_fix ())) | |
407 | { | |
408 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
409 | } | |
410 | } | |
411 | else | |
412 | { | |
413 | /* It is a .comm/.lcomm being converted to initialized | |
414 | data. */ | |
415 | symbolP->sy_frag = frag_now; | |
416 | #ifdef OBJ_VMS | |
7c743825 | 417 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
418 | #endif |
419 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 420 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
421 | } |
422 | } | |
423 | else | |
424 | { | |
4c63da97 AM |
425 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
426 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
427 | static const char *od_buf = ""; | |
252b5132 | 428 | #else |
4c63da97 AM |
429 | char od_buf[100]; |
430 | od_buf[0] = '\0'; | |
431 | #ifdef BFD_ASSEMBLER | |
432 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
433 | #endif | |
d1a6c242 KH |
434 | sprintf (od_buf, "%d.%d.", |
435 | S_GET_OTHER (symbolP), | |
436 | S_GET_DESC (symbolP)); | |
4c63da97 | 437 | #endif |
0e389e77 | 438 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
439 | sym_name, |
440 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 441 | od_buf, |
252b5132 | 442 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 443 | } |
7c743825 | 444 | } /* if the undefined symbol has no value */ |
252b5132 RH |
445 | } |
446 | else | |
447 | { | |
7c743825 | 448 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
449 | if (!(frag_now == symbolP->sy_frag |
450 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
451 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 452 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 453 | } |
252b5132 RH |
454 | |
455 | } | |
49309057 ILT |
456 | #ifdef BFD_ASSEMBLER |
457 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
458 | { | |
459 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
460 | (valueT) frag_now_fix (), | |
461 | frag_now); | |
462 | } | |
463 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
464 | else |
465 | { | |
466 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
467 | frag_now); | |
468 | #ifdef OBJ_VMS | |
469 | S_SET_OTHER (symbolP, const_flag); | |
470 | #endif /* OBJ_VMS */ | |
471 | ||
472 | symbol_table_insert (symbolP); | |
d4887adc | 473 | } |
252b5132 RH |
474 | |
475 | if (mri_common_symbol != NULL) | |
476 | { | |
477 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 478 | section. This requires special handling. */ |
49309057 ILT |
479 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
480 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
481 | symbolP->sy_value.X_op = O_symbol; |
482 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
483 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
484 | symbolP->sy_frag = &zero_address_frag; | |
485 | S_SET_SEGMENT (symbolP, expr_section); | |
486 | symbolP->sy_mri_common = 1; | |
487 | } | |
488 | ||
489 | #ifdef tc_frob_label | |
490 | tc_frob_label (symbolP); | |
491 | #endif | |
492 | #ifdef obj_frob_label | |
493 | obj_frob_label (symbolP); | |
494 | #endif | |
495 | ||
496 | return symbolP; | |
497 | } | |
498 | \f | |
7c743825 | 499 | /* Die if we can't insert the symbol. */ |
252b5132 | 500 | |
7c743825 | 501 | void |
74937d39 | 502 | symbol_table_insert (symbolS *symbolP) |
252b5132 RH |
503 | { |
504 | register const char *error_string; | |
505 | ||
506 | know (symbolP); | |
507 | know (S_GET_NAME (symbolP)); | |
508 | ||
49309057 ILT |
509 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
510 | { | |
511 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
512 | (PTR) symbolP); | |
513 | if (error_string != NULL) | |
0e389e77 | 514 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
515 | S_GET_NAME (symbolP), error_string); |
516 | return; | |
517 | } | |
518 | ||
252b5132 RH |
519 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
520 | { | |
0e389e77 | 521 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 522 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
523 | } /* on error */ |
524 | } | |
252b5132 | 525 | \f |
7c743825 KH |
526 | /* If a symbol name does not exist, create it as undefined, and insert |
527 | it into the symbol table. Return a pointer to it. */ | |
528 | ||
252b5132 | 529 | symbolS * |
74937d39 | 530 | symbol_find_or_make (const char *name) |
252b5132 RH |
531 | { |
532 | register symbolS *symbolP; | |
533 | ||
534 | symbolP = symbol_find (name); | |
535 | ||
536 | if (symbolP == NULL) | |
537 | { | |
49309057 ILT |
538 | #ifdef BFD_ASSEMBLER |
539 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
540 | { | |
541 | symbolP = md_undefined_symbol ((char *) name); | |
542 | if (symbolP != NULL) | |
543 | return symbolP; | |
544 | ||
545 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
546 | (valueT) 0, | |
547 | &zero_address_frag); | |
548 | return symbolP; | |
549 | } | |
550 | #endif | |
551 | ||
252b5132 RH |
552 | symbolP = symbol_make (name); |
553 | ||
554 | symbol_table_insert (symbolP); | |
555 | } /* if symbol wasn't found */ | |
556 | ||
557 | return (symbolP); | |
7c743825 | 558 | } |
252b5132 RH |
559 | |
560 | symbolS * | |
74937d39 | 561 | symbol_make (const char *name) |
252b5132 RH |
562 | { |
563 | symbolS *symbolP; | |
564 | ||
7c743825 | 565 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
566 | symbolP = md_undefined_symbol ((char *) name); |
567 | ||
568 | if (!symbolP) | |
569 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
570 | ||
571 | return (symbolP); | |
7c743825 | 572 | } |
252b5132 | 573 | |
b7d6ed97 | 574 | symbolS * |
74937d39 | 575 | symbol_temp_new (segT seg, valueT ofs, fragS *frag) |
b7d6ed97 | 576 | { |
756d1d01 | 577 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
578 | } |
579 | ||
580 | symbolS * | |
74937d39 | 581 | symbol_temp_new_now (void) |
b7d6ed97 RH |
582 | { |
583 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
584 | } | |
585 | ||
586 | symbolS * | |
74937d39 | 587 | symbol_temp_make (void) |
b7d6ed97 | 588 | { |
756d1d01 | 589 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
590 | } |
591 | ||
7c743825 KH |
592 | /* Implement symbol table lookup. |
593 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
594 | Out: NULL if the name was not in the symbol table, else the address | |
595 | of a struct symbol associated with that name. */ | |
252b5132 RH |
596 | |
597 | symbolS * | |
74937d39 | 598 | symbol_find (const char *name) |
252b5132 RH |
599 | { |
600 | #ifdef STRIP_UNDERSCORE | |
601 | return (symbol_find_base (name, 1)); | |
602 | #else /* STRIP_UNDERSCORE */ | |
603 | return (symbol_find_base (name, 0)); | |
604 | #endif /* STRIP_UNDERSCORE */ | |
7c743825 | 605 | } |
252b5132 | 606 | |
9758f3fc | 607 | symbolS * |
74937d39 | 608 | symbol_find_exact (const char *name) |
9758f3fc AM |
609 | { |
610 | #ifdef BFD_ASSEMBLER | |
611 | { | |
612 | struct local_symbol *locsym; | |
613 | ||
614 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
615 | if (locsym != NULL) | |
616 | return (symbolS *) locsym; | |
617 | } | |
618 | #endif | |
619 | ||
620 | return ((symbolS *) hash_find (sy_hash, name)); | |
621 | } | |
622 | ||
252b5132 | 623 | symbolS * |
74937d39 | 624 | symbol_find_base (const char *name, int strip_underscore) |
252b5132 RH |
625 | { |
626 | if (strip_underscore && *name == '_') | |
627 | name++; | |
628 | ||
629 | #ifdef tc_canonicalize_symbol_name | |
630 | { | |
631 | char *copy; | |
03987ced | 632 | size_t len = strlen (name) + 1; |
252b5132 | 633 | |
03987ced RH |
634 | copy = (char *) alloca (len); |
635 | memcpy (copy, name, len); | |
252b5132 RH |
636 | name = tc_canonicalize_symbol_name (copy); |
637 | } | |
638 | #endif | |
639 | ||
640 | if (! symbols_case_sensitive) | |
641 | { | |
03987ced RH |
642 | char *copy; |
643 | const char *orig; | |
644 | unsigned char c; | |
645 | ||
646 | orig = name; | |
647 | name = copy = (char *) alloca (strlen (name) + 1); | |
648 | ||
649 | while ((c = *orig++) != '\0') | |
650 | { | |
3882b010 | 651 | *copy++ = TOUPPER (c); |
03987ced RH |
652 | } |
653 | *copy = '\0'; | |
252b5132 RH |
654 | } |
655 | ||
9758f3fc | 656 | return symbol_find_exact (name); |
252b5132 RH |
657 | } |
658 | ||
7c743825 KH |
659 | /* Once upon a time, symbols were kept in a singly linked list. At |
660 | least coff needs to be able to rearrange them from time to time, for | |
661 | which a doubly linked list is much more convenient. Loic did these | |
662 | as macros which seemed dangerous to me so they're now functions. | |
663 | xoxorich. */ | |
664 | ||
665 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 666 | |
7c743825 | 667 | void |
74937d39 KH |
668 | symbol_append (symbolS *addme, symbolS *target, |
669 | symbolS **rootPP, symbolS **lastPP) | |
252b5132 | 670 | { |
49309057 ILT |
671 | if (LOCAL_SYMBOL_CHECK (addme)) |
672 | abort (); | |
673 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
674 | abort (); | |
675 | ||
252b5132 RH |
676 | if (target == NULL) |
677 | { | |
678 | know (*rootPP == NULL); | |
679 | know (*lastPP == NULL); | |
680 | addme->sy_next = NULL; | |
681 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
682 | addme->sy_previous = NULL; | |
683 | #endif | |
684 | *rootPP = addme; | |
685 | *lastPP = addme; | |
686 | return; | |
7c743825 | 687 | } /* if the list is empty */ |
252b5132 RH |
688 | |
689 | if (target->sy_next != NULL) | |
690 | { | |
691 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
692 | target->sy_next->sy_previous = addme; | |
693 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
694 | } | |
695 | else | |
696 | { | |
697 | know (*lastPP == target); | |
698 | *lastPP = addme; | |
7c743825 | 699 | } /* if we have a next */ |
252b5132 RH |
700 | |
701 | addme->sy_next = target->sy_next; | |
702 | target->sy_next = addme; | |
703 | ||
704 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
705 | addme->sy_previous = target; | |
706 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
707 | ||
708 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
709 | } | |
710 | ||
7c743825 KH |
711 | /* Set the chain pointers of SYMBOL to null. */ |
712 | ||
713 | void | |
74937d39 | 714 | symbol_clear_list_pointers (symbolS *symbolP) |
252b5132 | 715 | { |
49309057 ILT |
716 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
717 | abort (); | |
252b5132 RH |
718 | symbolP->sy_next = NULL; |
719 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
720 | symbolP->sy_previous = NULL; | |
721 | #endif | |
722 | } | |
723 | ||
724 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
725 | /* Remove SYMBOLP from the list. */ |
726 | ||
727 | void | |
74937d39 | 728 | symbol_remove (symbolS *symbolP, symbolS **rootPP, symbolS **lastPP) |
252b5132 | 729 | { |
49309057 ILT |
730 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
731 | abort (); | |
732 | ||
252b5132 RH |
733 | if (symbolP == *rootPP) |
734 | { | |
735 | *rootPP = symbolP->sy_next; | |
7c743825 | 736 | } /* if it was the root */ |
252b5132 RH |
737 | |
738 | if (symbolP == *lastPP) | |
739 | { | |
740 | *lastPP = symbolP->sy_previous; | |
7c743825 | 741 | } /* if it was the tail */ |
252b5132 RH |
742 | |
743 | if (symbolP->sy_next != NULL) | |
744 | { | |
745 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 746 | } /* if not last */ |
252b5132 RH |
747 | |
748 | if (symbolP->sy_previous != NULL) | |
749 | { | |
750 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 751 | } /* if not first */ |
252b5132 RH |
752 | |
753 | debug_verify_symchain (*rootPP, *lastPP); | |
754 | } | |
755 | ||
7c743825 KH |
756 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
757 | ||
758 | void | |
74937d39 KH |
759 | symbol_insert (symbolS *addme, symbolS *target, |
760 | symbolS **rootPP, symbolS **lastPP ATTRIBUTE_UNUSED) | |
252b5132 | 761 | { |
49309057 ILT |
762 | if (LOCAL_SYMBOL_CHECK (addme)) |
763 | abort (); | |
764 | if (LOCAL_SYMBOL_CHECK (target)) | |
765 | abort (); | |
766 | ||
252b5132 RH |
767 | if (target->sy_previous != NULL) |
768 | { | |
769 | target->sy_previous->sy_next = addme; | |
770 | } | |
771 | else | |
772 | { | |
773 | know (*rootPP == target); | |
774 | *rootPP = addme; | |
7c743825 | 775 | } /* if not first */ |
252b5132 RH |
776 | |
777 | addme->sy_previous = target->sy_previous; | |
778 | target->sy_previous = addme; | |
779 | addme->sy_next = target; | |
780 | ||
781 | debug_verify_symchain (*rootPP, *lastPP); | |
782 | } | |
783 | ||
784 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
785 | ||
7c743825 | 786 | void |
74937d39 | 787 | verify_symbol_chain (symbolS *rootP, symbolS *lastP) |
252b5132 RH |
788 | { |
789 | symbolS *symbolP = rootP; | |
790 | ||
791 | if (symbolP == NULL) | |
792 | return; | |
793 | ||
794 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
795 | { | |
49309057 ILT |
796 | #ifdef BFD_ASSEMBLER |
797 | assert (symbolP->bsym != NULL); | |
798 | #endif | |
252b5132 RH |
799 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
800 | assert (symbolP->sy_next->sy_previous == symbolP); | |
801 | #else | |
802 | /* Walk the list anyways, to make sure pointers are still good. */ | |
803 | ; | |
804 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
805 | } | |
806 | ||
807 | assert (lastP == symbolP); | |
808 | } | |
809 | ||
810 | void | |
74937d39 | 811 | verify_symbol_chain_2 (symbolS *sym) |
252b5132 RH |
812 | { |
813 | symbolS *p = sym, *n = sym; | |
814 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
815 | while (symbol_previous (p)) | |
816 | p = symbol_previous (p); | |
817 | #endif | |
818 | while (symbol_next (n)) | |
819 | n = symbol_next (n); | |
820 | verify_symbol_chain (p, n); | |
821 | } | |
822 | ||
0909233e | 823 | static void |
74937d39 | 824 | report_op_error (symbolS *symp, symbolS *left, symbolS *right) |
0909233e AM |
825 | { |
826 | char *file; | |
827 | unsigned int line; | |
828 | segT seg_left = S_GET_SEGMENT (left); | |
829 | segT seg_right = right ? S_GET_SEGMENT (right) : 0; | |
1d3b2b27 | 830 | |
0909233e AM |
831 | if (expr_symbol_where (symp, &file, &line)) |
832 | { | |
833 | if (seg_left == undefined_section) | |
834 | as_bad_where (file, line, | |
835 | _("undefined symbol `%s' in operation"), | |
836 | S_GET_NAME (left)); | |
837 | if (seg_right == undefined_section) | |
838 | as_bad_where (file, line, | |
839 | _("undefined symbol `%s' in operation"), | |
840 | S_GET_NAME (right)); | |
841 | if (seg_left != undefined_section | |
842 | && seg_right != undefined_section) | |
843 | { | |
844 | if (right) | |
845 | as_bad_where (file, line, | |
846 | _("invalid sections for operation on `%s' and `%s'"), | |
847 | S_GET_NAME (left), S_GET_NAME (right)); | |
848 | else | |
849 | as_bad_where (file, line, | |
850 | _("invalid section for operation on `%s'"), | |
851 | S_GET_NAME (left)); | |
852 | } | |
1d3b2b27 | 853 | |
0909233e AM |
854 | } |
855 | else | |
856 | { | |
857 | if (seg_left == undefined_section) | |
858 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
859 | S_GET_NAME (left), S_GET_NAME (symp)); | |
860 | if (seg_right == undefined_section) | |
861 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
862 | S_GET_NAME (right), S_GET_NAME (symp)); | |
863 | if (seg_left != undefined_section | |
864 | && seg_right != undefined_section) | |
865 | { | |
866 | if (right) | |
867 | as_bad_where (file, line, | |
868 | _("invalid sections for operation on `%s' and `%s' setting `%s'"), | |
869 | S_GET_NAME (left), S_GET_NAME (right), S_GET_NAME (symp)); | |
870 | else | |
871 | as_bad_where (file, line, | |
872 | _("invalid section for operation on `%s' setting `%s'"), | |
873 | S_GET_NAME (left), S_GET_NAME (symp)); | |
874 | } | |
875 | } | |
876 | } | |
877 | ||
252b5132 RH |
878 | /* Resolve the value of a symbol. This is called during the final |
879 | pass over the symbol table to resolve any symbols with complex | |
880 | values. */ | |
881 | ||
882 | valueT | |
74937d39 | 883 | resolve_symbol_value (symbolS *symp) |
252b5132 RH |
884 | { |
885 | int resolved; | |
03e83a45 | 886 | valueT final_val = 0; |
252b5132 RH |
887 | segT final_seg; |
888 | ||
a1605869 | 889 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
890 | if (LOCAL_SYMBOL_CHECK (symp)) |
891 | { | |
892 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
893 | ||
bd780143 | 894 | final_val = locsym->lsy_value; |
49309057 | 895 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 896 | return final_val; |
49309057 | 897 | |
bd780143 | 898 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 899 | |
6386f3a7 | 900 | if (finalize_syms) |
49309057 | 901 | { |
bd780143 | 902 | locsym->lsy_value = final_val; |
49309057 ILT |
903 | local_symbol_mark_resolved (locsym); |
904 | } | |
905 | ||
906 | return final_val; | |
907 | } | |
a1605869 | 908 | #endif |
49309057 | 909 | |
252b5132 RH |
910 | if (symp->sy_resolved) |
911 | { | |
912 | if (symp->sy_value.X_op == O_constant) | |
913 | return (valueT) symp->sy_value.X_add_number; | |
914 | else | |
915 | return 0; | |
916 | } | |
917 | ||
918 | resolved = 0; | |
919 | final_seg = S_GET_SEGMENT (symp); | |
920 | ||
921 | if (symp->sy_resolving) | |
922 | { | |
6386f3a7 | 923 | if (finalize_syms) |
0e389e77 | 924 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 925 | S_GET_NAME (symp)); |
252b5132 RH |
926 | final_val = 0; |
927 | resolved = 1; | |
928 | } | |
929 | else | |
930 | { | |
931 | symbolS *add_symbol, *op_symbol; | |
932 | offsetT left, right; | |
933 | segT seg_left, seg_right; | |
934 | operatorT op; | |
935 | ||
936 | symp->sy_resolving = 1; | |
937 | ||
938 | /* Help out with CSE. */ | |
939 | add_symbol = symp->sy_value.X_add_symbol; | |
940 | op_symbol = symp->sy_value.X_op_symbol; | |
941 | final_val = symp->sy_value.X_add_number; | |
942 | op = symp->sy_value.X_op; | |
943 | ||
944 | switch (op) | |
945 | { | |
946 | default: | |
947 | BAD_CASE (op); | |
948 | break; | |
949 | ||
950 | case O_absent: | |
951 | final_val = 0; | |
952 | /* Fall through. */ | |
953 | ||
954 | case O_constant: | |
bea9907b | 955 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
956 | if (final_seg == expr_section) |
957 | final_seg = absolute_section; | |
958 | resolved = 1; | |
959 | break; | |
960 | ||
961 | case O_symbol: | |
962 | case O_symbol_rva: | |
6386f3a7 | 963 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
964 | seg_left = S_GET_SEGMENT (add_symbol); |
965 | if (finalize_syms) | |
966 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 967 | |
e0890092 | 968 | do_symbol: |
252b5132 RH |
969 | if (symp->sy_mri_common) |
970 | { | |
971 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
972 | relocation routines are going to handle it specially. |
973 | Don't change the value. */ | |
49309057 | 974 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
975 | break; |
976 | } | |
977 | ||
6386f3a7 | 978 | if (finalize_syms && final_val == 0) |
49309057 ILT |
979 | { |
980 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
981 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
982 | add_symbol); | |
983 | copy_symbol_attributes (symp, add_symbol); | |
984 | } | |
252b5132 | 985 | |
e0890092 AM |
986 | /* If we have equated this symbol to an undefined or common |
987 | symbol, keep X_op set to O_symbol, and don't change | |
988 | X_add_number. This permits the routine which writes out | |
989 | relocation to detect this case, and convert the | |
990 | relocation to be against the symbol to which this symbol | |
991 | is equated. */ | |
252b5132 RH |
992 | if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol)) |
993 | { | |
6386f3a7 | 994 | if (finalize_syms) |
252b5132 | 995 | { |
252b5132 RH |
996 | symp->sy_value.X_op = O_symbol; |
997 | symp->sy_value.X_add_symbol = add_symbol; | |
998 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
999 | /* Use X_op_symbol as a flag. */ |
1000 | symp->sy_value.X_op_symbol = add_symbol; | |
1001 | final_seg = seg_left; | |
252b5132 RH |
1002 | } |
1003 | final_val = 0; | |
49309057 | 1004 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1005 | symp->sy_resolving = 0; |
252b5132 RH |
1006 | goto exit_dont_set_value; |
1007 | } | |
e0890092 AM |
1008 | else if (finalize_syms && final_seg == expr_section |
1009 | && seg_left != expr_section) | |
1010 | { | |
1011 | /* If the symbol is an expression symbol, do similarly | |
1012 | as for undefined and common syms above. Handles | |
1013 | "sym +/- expr" where "expr" cannot be evaluated | |
1014 | immediately, and we want relocations to be against | |
1015 | "sym", eg. because it is weak. */ | |
1016 | symp->sy_value.X_op = O_symbol; | |
1017 | symp->sy_value.X_add_symbol = add_symbol; | |
1018 | symp->sy_value.X_add_number = final_val; | |
1019 | symp->sy_value.X_op_symbol = add_symbol; | |
1020 | final_seg = seg_left; | |
1021 | final_val += symp->sy_frag->fr_address + left; | |
1022 | resolved = symbol_resolved_p (add_symbol); | |
1023 | symp->sy_resolving = 0; | |
1024 | goto exit_dont_set_value; | |
1025 | } | |
252b5132 RH |
1026 | else |
1027 | { | |
1028 | final_val += symp->sy_frag->fr_address + left; | |
1029 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1030 | final_seg = seg_left; |
252b5132 RH |
1031 | } |
1032 | ||
49309057 | 1033 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1034 | break; |
1035 | ||
1036 | case O_uminus: | |
1037 | case O_bit_not: | |
1038 | case O_logical_not: | |
6386f3a7 | 1039 | left = resolve_symbol_value (add_symbol); |
784b640d | 1040 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1041 | |
0909233e AM |
1042 | /* By reducing these to the relevant dyadic operator, we get |
1043 | !S -> S == 0 permitted on anything, | |
1044 | -S -> 0 - S only permitted on absolute | |
1045 | ~S -> S ^ ~0 only permitted on absolute */ | |
1046 | if (op != O_logical_not && seg_left != absolute_section | |
1047 | && finalize_syms) | |
1048 | report_op_error (symp, add_symbol, NULL); | |
1d3b2b27 | 1049 | |
0909233e AM |
1050 | if (final_seg == expr_section || final_seg == undefined_section) |
1051 | final_seg = absolute_section; | |
1d3b2b27 | 1052 | |
252b5132 RH |
1053 | if (op == O_uminus) |
1054 | left = -left; | |
1055 | else if (op == O_logical_not) | |
1056 | left = !left; | |
1057 | else | |
1058 | left = ~left; | |
1059 | ||
1060 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1061 | |
49309057 | 1062 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1063 | break; |
1064 | ||
1065 | case O_multiply: | |
1066 | case O_divide: | |
1067 | case O_modulus: | |
1068 | case O_left_shift: | |
1069 | case O_right_shift: | |
1070 | case O_bit_inclusive_or: | |
1071 | case O_bit_or_not: | |
1072 | case O_bit_exclusive_or: | |
1073 | case O_bit_and: | |
1074 | case O_add: | |
1075 | case O_subtract: | |
1076 | case O_eq: | |
1077 | case O_ne: | |
1078 | case O_lt: | |
1079 | case O_le: | |
1080 | case O_ge: | |
1081 | case O_gt: | |
1082 | case O_logical_and: | |
1083 | case O_logical_or: | |
6386f3a7 AM |
1084 | left = resolve_symbol_value (add_symbol); |
1085 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1086 | seg_left = S_GET_SEGMENT (add_symbol); |
1087 | seg_right = S_GET_SEGMENT (op_symbol); | |
1088 | ||
1089 | /* Simplify addition or subtraction of a constant by folding the | |
1090 | constant into X_add_number. */ | |
e0890092 | 1091 | if (op == O_add) |
252b5132 RH |
1092 | { |
1093 | if (seg_right == absolute_section) | |
1094 | { | |
e0890092 | 1095 | final_val += right; |
252b5132 RH |
1096 | goto do_symbol; |
1097 | } | |
e0890092 | 1098 | else if (seg_left == absolute_section) |
252b5132 | 1099 | { |
252b5132 RH |
1100 | final_val += left; |
1101 | add_symbol = op_symbol; | |
1102 | left = right; | |
e0890092 AM |
1103 | seg_left = seg_right; |
1104 | goto do_symbol; | |
1105 | } | |
1106 | } | |
1107 | else if (op == O_subtract) | |
1108 | { | |
1109 | if (seg_right == absolute_section) | |
1110 | { | |
1111 | final_val -= right; | |
252b5132 RH |
1112 | goto do_symbol; |
1113 | } | |
1114 | } | |
1115 | ||
e0890092 AM |
1116 | /* Equality and non-equality tests are permitted on anything. |
1117 | Subtraction, and other comparison operators are permitted if | |
1118 | both operands are in the same section. Otherwise, both | |
1119 | operands must be absolute. We already handled the case of | |
1120 | addition or subtraction of a constant above. This will | |
1121 | probably need to be changed for an object file format which | |
1122 | supports arbitrary expressions, such as IEEE-695. | |
1123 | ||
1124 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1125 | otherwise we may get the same message multiple times. */ |
0909233e AM |
1126 | if (finalize_syms |
1127 | && !(seg_left == absolute_section | |
1128 | && seg_right == absolute_section) | |
1129 | && !(op == O_eq || op == O_ne) | |
1130 | && !((op == O_subtract | |
1131 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1132 | && seg_left == seg_right | |
1133 | && (seg_left != undefined_section | |
1134 | || add_symbol == op_symbol))) | |
1135 | report_op_error (symp, add_symbol, op_symbol); | |
1d3b2b27 | 1136 | |
0909233e AM |
1137 | if (final_seg == expr_section || final_seg == undefined_section) |
1138 | final_seg = absolute_section; | |
252b5132 RH |
1139 | |
1140 | /* Check for division by zero. */ | |
1141 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1142 | { | |
1143 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1144 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1145 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1146 | { |
1147 | char *file; | |
1148 | unsigned int line; | |
1149 | ||
1150 | if (expr_symbol_where (symp, &file, &line)) | |
1151 | as_bad_where (file, line, _("division by zero")); | |
1152 | else | |
0e389e77 | 1153 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1154 | S_GET_NAME (symp)); |
1155 | } | |
1156 | ||
1157 | right = 1; | |
1158 | } | |
1159 | ||
1160 | switch (symp->sy_value.X_op) | |
1161 | { | |
1162 | case O_multiply: left *= right; break; | |
1163 | case O_divide: left /= right; break; | |
1164 | case O_modulus: left %= right; break; | |
1165 | case O_left_shift: left <<= right; break; | |
1166 | case O_right_shift: left >>= right; break; | |
1167 | case O_bit_inclusive_or: left |= right; break; | |
1168 | case O_bit_or_not: left |= ~right; break; | |
1169 | case O_bit_exclusive_or: left ^= right; break; | |
1170 | case O_bit_and: left &= right; break; | |
1171 | case O_add: left += right; break; | |
1172 | case O_subtract: left -= right; break; | |
e0890092 AM |
1173 | case O_eq: |
1174 | case O_ne: | |
1175 | left = (left == right && seg_left == seg_right | |
1176 | && (seg_left != undefined_section | |
1177 | || add_symbol == op_symbol) | |
1178 | ? ~ (offsetT) 0 : 0); | |
1179 | if (symp->sy_value.X_op == O_ne) | |
1180 | left = ~left; | |
1181 | break; | |
252b5132 RH |
1182 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1183 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1184 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1185 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1186 | case O_logical_and: left = left && right; break; | |
1187 | case O_logical_or: left = left || right; break; | |
1188 | default: abort (); | |
1189 | } | |
1190 | ||
1191 | final_val += symp->sy_frag->fr_address + left; | |
1192 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1193 | { |
1194 | if (seg_left == undefined_section | |
1195 | || seg_right == undefined_section) | |
1196 | final_seg = undefined_section; | |
1197 | else if (seg_left == absolute_section) | |
1198 | final_seg = seg_right; | |
1199 | else | |
1200 | final_seg = seg_left; | |
1201 | } | |
49309057 ILT |
1202 | resolved = (symbol_resolved_p (add_symbol) |
1203 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1204 | break; |
252b5132 RH |
1205 | |
1206 | case O_register: | |
1207 | case O_big: | |
1208 | case O_illegal: | |
1209 | /* Give an error (below) if not in expr_section. We don't | |
1210 | want to worry about expr_section symbols, because they | |
1211 | are fictional (they are created as part of expression | |
1212 | resolution), and any problems may not actually mean | |
1213 | anything. */ | |
1214 | break; | |
1215 | } | |
1216 | ||
1217 | symp->sy_resolving = 0; | |
1218 | } | |
1219 | ||
6386f3a7 | 1220 | if (finalize_syms) |
05bdb37e | 1221 | S_SET_VALUE (symp, final_val); |
252b5132 | 1222 | |
05bdb37e AM |
1223 | exit_dont_set_value: |
1224 | /* Always set the segment, even if not finalizing the value. | |
1225 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1226 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1227 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1228 | for a stab symbol, so we use this bad hack. */ | |
1229 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1230 | #endif |
05bdb37e | 1231 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1232 | |
252b5132 | 1233 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1234 | if (finalize_syms) |
252b5132 RH |
1235 | { |
1236 | if (resolved) | |
1237 | symp->sy_resolved = 1; | |
1238 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1239 | { | |
0e389e77 | 1240 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1241 | S_GET_NAME (symp)); |
252b5132 RH |
1242 | symp->sy_resolved = 1; |
1243 | } | |
1244 | } | |
1245 | ||
1246 | return final_val; | |
1247 | } | |
1248 | ||
49309057 ILT |
1249 | #ifdef BFD_ASSEMBLER |
1250 | ||
74937d39 | 1251 | static void resolve_local_symbol (const char *, PTR); |
49309057 ILT |
1252 | |
1253 | /* A static function passed to hash_traverse. */ | |
1254 | ||
1255 | static void | |
74937d39 | 1256 | resolve_local_symbol (const char *key ATTRIBUTE_UNUSED, PTR value) |
49309057 ILT |
1257 | { |
1258 | if (value != NULL) | |
6386f3a7 | 1259 | resolve_symbol_value (value); |
49309057 ILT |
1260 | } |
1261 | ||
1262 | #endif | |
1263 | ||
1264 | /* Resolve all local symbols. */ | |
1265 | ||
1266 | void | |
74937d39 | 1267 | resolve_local_symbol_values (void) |
49309057 ILT |
1268 | { |
1269 | #ifdef BFD_ASSEMBLER | |
1270 | hash_traverse (local_hash, resolve_local_symbol); | |
1271 | #endif | |
1272 | } | |
1273 | ||
252b5132 RH |
1274 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1275 | They are *really* local. That is, they go out of scope whenever we see a | |
1276 | label that isn't local. Also, like fb labels, there can be multiple | |
1277 | instances of a dollar label. Therefor, we name encode each instance with | |
1278 | the instance number, keep a list of defined symbols separate from the real | |
1279 | symbol table, and we treat these buggers as a sparse array. */ | |
1280 | ||
1281 | static long *dollar_labels; | |
1282 | static long *dollar_label_instances; | |
1283 | static char *dollar_label_defines; | |
1284 | static unsigned long dollar_label_count; | |
1285 | static unsigned long dollar_label_max; | |
1286 | ||
7c743825 | 1287 | int |
74937d39 | 1288 | dollar_label_defined (long label) |
252b5132 RH |
1289 | { |
1290 | long *i; | |
1291 | ||
1292 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1293 | ||
1294 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1295 | if (*i == label) | |
1296 | return dollar_label_defines[i - dollar_labels]; | |
1297 | ||
7c743825 | 1298 | /* If we get here, label isn't defined. */ |
252b5132 | 1299 | return 0; |
7c743825 | 1300 | } |
252b5132 RH |
1301 | |
1302 | static long | |
74937d39 | 1303 | dollar_label_instance (long label) |
252b5132 RH |
1304 | { |
1305 | long *i; | |
1306 | ||
1307 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1308 | ||
1309 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1310 | if (*i == label) | |
1311 | return (dollar_label_instances[i - dollar_labels]); | |
1312 | ||
7c743825 KH |
1313 | /* If we get here, we haven't seen the label before. |
1314 | Therefore its instance count is zero. */ | |
252b5132 RH |
1315 | return 0; |
1316 | } | |
1317 | ||
7c743825 | 1318 | void |
74937d39 | 1319 | dollar_label_clear (void) |
252b5132 RH |
1320 | { |
1321 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1322 | } | |
1323 | ||
1324 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1325 | ||
7c743825 | 1326 | void |
74937d39 | 1327 | define_dollar_label (long label) |
252b5132 RH |
1328 | { |
1329 | long *i; | |
1330 | ||
1331 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1332 | if (*i == label) | |
1333 | { | |
1334 | ++dollar_label_instances[i - dollar_labels]; | |
1335 | dollar_label_defines[i - dollar_labels] = 1; | |
1336 | return; | |
1337 | } | |
1338 | ||
7c743825 | 1339 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1340 | |
1341 | if (dollar_labels == NULL) | |
1342 | { | |
1343 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1344 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1345 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1346 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1347 | dollar_label_count = 0; | |
1348 | } | |
1349 | else if (dollar_label_count == dollar_label_max) | |
1350 | { | |
1351 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1352 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1353 | dollar_label_max * sizeof (long)); | |
1354 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1355 | dollar_label_max * sizeof (long)); | |
1356 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1357 | } /* if we needed to grow */ |
252b5132 RH |
1358 | |
1359 | dollar_labels[dollar_label_count] = label; | |
1360 | dollar_label_instances[dollar_label_count] = 1; | |
1361 | dollar_label_defines[dollar_label_count] = 1; | |
1362 | ++dollar_label_count; | |
1363 | } | |
1364 | ||
7c743825 KH |
1365 | /* Caller must copy returned name: we re-use the area for the next name. |
1366 | ||
1367 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1368 | where n is the label number and m is the instance number. "L" makes | |
1369 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1370 | ordinary symbol SHOULD get the same name as a local label | |
1371 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1372 | ||
1373 | fb labels get the same treatment, except that ^B is used in place | |
1374 | of ^A. */ | |
1375 | ||
1376 | char * /* Return local label name. */ | |
74937d39 KH |
1377 | dollar_label_name (register long n, /* we just saw "n$:" : n a number. */ |
1378 | register int augend /* 0 for current instance, 1 for new instance. */) | |
252b5132 RH |
1379 | { |
1380 | long i; | |
7c743825 | 1381 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1382 | static char symbol_name_build[24]; |
1383 | register char *p; | |
1384 | register char *q; | |
7c743825 | 1385 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1386 | |
1387 | know (n >= 0); | |
1388 | know (augend == 0 || augend == 1); | |
1389 | p = symbol_name_build; | |
f84dd1f0 NC |
1390 | #ifdef LOCAL_LABEL_PREFIX |
1391 | *p++ = LOCAL_LABEL_PREFIX; | |
1392 | #endif | |
252b5132 RH |
1393 | *p++ = 'L'; |
1394 | ||
7c743825 KH |
1395 | /* Next code just does sprintf( {}, "%d", n); */ |
1396 | /* Label number. */ | |
252b5132 RH |
1397 | q = symbol_name_temporary; |
1398 | for (*q++ = 0, i = n; i; ++q) | |
1399 | { | |
1400 | *q = i % 10 + '0'; | |
1401 | i /= 10; | |
1402 | } | |
1403 | while ((*p = *--q) != '\0') | |
1404 | ++p; | |
1405 | ||
aa257fcd | 1406 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1407 | |
7c743825 | 1408 | /* Instance number. */ |
252b5132 RH |
1409 | q = symbol_name_temporary; |
1410 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1411 | { | |
1412 | *q = i % 10 + '0'; | |
1413 | i /= 10; | |
1414 | } | |
1415 | while ((*p++ = *--q) != '\0');; | |
1416 | ||
7c743825 | 1417 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1418 | return symbol_name_build; |
1419 | } | |
1420 | ||
47eebc20 | 1421 | /* Somebody else's idea of local labels. They are made by "n:" where n |
7c743825 KH |
1422 | is any decimal digit. Refer to them with |
1423 | "nb" for previous (backward) n: | |
1424 | or "nf" for next (forward) n:. | |
1425 | ||
1426 | We do a little better and let n be any number, not just a single digit, but | |
1427 | since the other guy's assembler only does ten, we treat the first ten | |
1428 | specially. | |
1429 | ||
1430 | Like someone else's assembler, we have one set of local label counters for | |
1431 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1432 | implies that one can refer to a label in another segment, and indeed some | |
1433 | crufty compilers have done just that. | |
1434 | ||
1435 | Since there could be a LOT of these things, treat them as a sparse | |
1436 | array. */ | |
252b5132 RH |
1437 | |
1438 | #define FB_LABEL_SPECIAL (10) | |
1439 | ||
1440 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1441 | static long *fb_labels; | |
1442 | static long *fb_label_instances; | |
1443 | static long fb_label_count; | |
1444 | static long fb_label_max; | |
1445 | ||
7c743825 | 1446 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1447 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1448 | ||
7c743825 | 1449 | static void |
74937d39 | 1450 | fb_label_init (void) |
252b5132 RH |
1451 | { |
1452 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1453 | } |
252b5132 | 1454 | |
7c743825 KH |
1455 | /* Add one to the instance number of this fb label. */ |
1456 | ||
1457 | void | |
74937d39 | 1458 | fb_label_instance_inc (long label) |
252b5132 RH |
1459 | { |
1460 | long *i; | |
1461 | ||
1462 | if (label < FB_LABEL_SPECIAL) | |
1463 | { | |
1464 | ++fb_low_counter[label]; | |
1465 | return; | |
1466 | } | |
1467 | ||
1468 | if (fb_labels != NULL) | |
1469 | { | |
1470 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1471 | i < fb_labels + fb_label_count; ++i) | |
1472 | { | |
1473 | if (*i == label) | |
1474 | { | |
1475 | ++fb_label_instances[i - fb_labels]; | |
1476 | return; | |
7c743825 KH |
1477 | } /* if we find it */ |
1478 | } /* for each existing label */ | |
252b5132 RH |
1479 | } |
1480 | ||
7c743825 | 1481 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1482 | |
1483 | if (fb_labels == NULL) | |
1484 | { | |
1485 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1486 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1487 | fb_label_max = FB_LABEL_BUMP_BY; | |
1488 | fb_label_count = FB_LABEL_SPECIAL; | |
1489 | ||
1490 | } | |
1491 | else if (fb_label_count == fb_label_max) | |
1492 | { | |
1493 | fb_label_max += FB_LABEL_BUMP_BY; | |
1494 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1495 | fb_label_max * sizeof (long)); | |
1496 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1497 | fb_label_max * sizeof (long)); | |
7c743825 | 1498 | } /* if we needed to grow */ |
252b5132 RH |
1499 | |
1500 | fb_labels[fb_label_count] = label; | |
1501 | fb_label_instances[fb_label_count] = 1; | |
1502 | ++fb_label_count; | |
1503 | } | |
1504 | ||
7c743825 | 1505 | static long |
74937d39 | 1506 | fb_label_instance (long label) |
252b5132 RH |
1507 | { |
1508 | long *i; | |
1509 | ||
1510 | if (label < FB_LABEL_SPECIAL) | |
1511 | { | |
1512 | return (fb_low_counter[label]); | |
1513 | } | |
1514 | ||
1515 | if (fb_labels != NULL) | |
1516 | { | |
1517 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1518 | i < fb_labels + fb_label_count; ++i) | |
1519 | { | |
1520 | if (*i == label) | |
1521 | { | |
1522 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1523 | } /* if we find it */ |
1524 | } /* for each existing label */ | |
252b5132 RH |
1525 | } |
1526 | ||
1527 | /* We didn't find the label, so this must be a reference to the | |
1528 | first instance. */ | |
1529 | return 0; | |
1530 | } | |
1531 | ||
7c743825 KH |
1532 | /* Caller must copy returned name: we re-use the area for the next name. |
1533 | ||
1534 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1535 | where n is the label number and m is the instance number. "L" makes | |
1536 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1537 | ordinary symbol SHOULD get the same name as a local label | |
1538 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1539 | ||
1540 | dollar labels get the same treatment, except that ^A is used in | |
1541 | place of ^B. */ | |
1542 | ||
1543 | char * /* Return local label name. */ | |
74937d39 KH |
1544 | fb_label_name (long n, /* We just saw "n:", "nf" or "nb" : n a number. */ |
1545 | long augend /* 0 for nb, 1 for n:, nf. */) | |
252b5132 RH |
1546 | { |
1547 | long i; | |
7c743825 | 1548 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1549 | static char symbol_name_build[24]; |
1550 | register char *p; | |
1551 | register char *q; | |
7c743825 | 1552 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1553 | |
1554 | know (n >= 0); | |
1555 | know (augend == 0 || augend == 1); | |
1556 | p = symbol_name_build; | |
aa257fcd NC |
1557 | #ifdef LOCAL_LABEL_PREFIX |
1558 | *p++ = LOCAL_LABEL_PREFIX; | |
1559 | #endif | |
252b5132 RH |
1560 | *p++ = 'L'; |
1561 | ||
7c743825 KH |
1562 | /* Next code just does sprintf( {}, "%d", n); */ |
1563 | /* Label number. */ | |
252b5132 RH |
1564 | q = symbol_name_temporary; |
1565 | for (*q++ = 0, i = n; i; ++q) | |
1566 | { | |
1567 | *q = i % 10 + '0'; | |
1568 | i /= 10; | |
1569 | } | |
1570 | while ((*p = *--q) != '\0') | |
1571 | ++p; | |
1572 | ||
aa257fcd | 1573 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1574 | |
7c743825 | 1575 | /* Instance number. */ |
252b5132 RH |
1576 | q = symbol_name_temporary; |
1577 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1578 | { | |
1579 | *q = i % 10 + '0'; | |
1580 | i /= 10; | |
1581 | } | |
1582 | while ((*p++ = *--q) != '\0');; | |
1583 | ||
7c743825 | 1584 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1585 | return (symbol_name_build); |
7c743825 | 1586 | } |
252b5132 | 1587 | |
7c743825 KH |
1588 | /* Decode name that may have been generated by foo_label_name() above. |
1589 | If the name wasn't generated by foo_label_name(), then return it | |
1590 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1591 | |
1592 | char * | |
74937d39 | 1593 | decode_local_label_name (char *s) |
252b5132 RH |
1594 | { |
1595 | char *p; | |
1596 | char *symbol_decode; | |
1597 | int label_number; | |
1598 | int instance_number; | |
1599 | char *type; | |
d95767bf | 1600 | const char *message_format; |
aa257fcd | 1601 | int index = 0; |
43ad3147 | 1602 | |
aa257fcd NC |
1603 | #ifdef LOCAL_LABEL_PREFIX |
1604 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1605 | ++index; | |
1606 | #endif | |
43ad3147 | 1607 | |
aa257fcd | 1608 | if (s[index] != 'L') |
252b5132 RH |
1609 | return s; |
1610 | ||
3882b010 | 1611 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1612 | label_number = (10 * label_number) + *p - '0'; |
1613 | ||
aa257fcd | 1614 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1615 | type = "dollar"; |
aa257fcd | 1616 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1617 | type = "fb"; |
1618 | else | |
1619 | return s; | |
1620 | ||
3882b010 | 1621 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1622 | instance_number = (10 * instance_number) + *p - '0'; |
1623 | ||
d95767bf | 1624 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1625 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1626 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1627 | ||
1628 | return symbol_decode; | |
1629 | } | |
1630 | ||
1631 | /* Get the value of a symbol. */ | |
1632 | ||
1633 | valueT | |
74937d39 | 1634 | S_GET_VALUE (symbolS *s) |
252b5132 | 1635 | { |
a1605869 | 1636 | #ifdef BFD_ASSEMBLER |
49309057 | 1637 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1638 | return resolve_symbol_value (s); |
a1605869 | 1639 | #endif |
49309057 | 1640 | |
ac62c346 | 1641 | if (!s->sy_resolved) |
e46d99eb | 1642 | { |
6386f3a7 AM |
1643 | valueT val = resolve_symbol_value (s); |
1644 | if (!finalize_syms) | |
e46d99eb AM |
1645 | return val; |
1646 | } | |
252b5132 RH |
1647 | if (s->sy_value.X_op != O_constant) |
1648 | { | |
1649 | static symbolS *recur; | |
1650 | ||
1651 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1d3b2b27 AM |
1652 | may call S_GET_VALUE. We use a static symbol to avoid the |
1653 | immediate recursion. */ | |
252b5132 RH |
1654 | if (recur == s) |
1655 | return (valueT) s->sy_value.X_add_number; | |
1656 | recur = s; | |
1657 | if (! s->sy_resolved | |
1658 | || s->sy_value.X_op != O_symbol | |
1659 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1660 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1661 | S_GET_NAME (s)); |
1662 | recur = NULL; | |
1663 | } | |
1664 | return (valueT) s->sy_value.X_add_number; | |
1665 | } | |
1666 | ||
1667 | /* Set the value of a symbol. */ | |
1668 | ||
1669 | void | |
74937d39 | 1670 | S_SET_VALUE (symbolS *s, valueT val) |
252b5132 | 1671 | { |
a1605869 | 1672 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1673 | if (LOCAL_SYMBOL_CHECK (s)) |
1674 | { | |
bd780143 | 1675 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1676 | return; |
1677 | } | |
a1605869 | 1678 | #endif |
49309057 | 1679 | |
252b5132 RH |
1680 | s->sy_value.X_op = O_constant; |
1681 | s->sy_value.X_add_number = (offsetT) val; | |
1682 | s->sy_value.X_unsigned = 0; | |
1683 | } | |
1684 | ||
1685 | void | |
74937d39 | 1686 | copy_symbol_attributes (symbolS *dest, symbolS *src) |
252b5132 | 1687 | { |
49309057 | 1688 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1689 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1690 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1691 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1692 | |
252b5132 RH |
1693 | #ifdef BFD_ASSEMBLER |
1694 | /* In an expression, transfer the settings of these flags. | |
1695 | The user can override later, of course. */ | |
1696 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1697 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1698 | #endif | |
1699 | ||
1700 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1701 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1702 | #endif | |
1703 | } | |
1704 | ||
1705 | #ifdef BFD_ASSEMBLER | |
1706 | ||
1707 | int | |
74937d39 | 1708 | S_IS_FUNCTION (symbolS *s) |
252b5132 | 1709 | { |
49309057 ILT |
1710 | flagword flags; |
1711 | ||
1712 | if (LOCAL_SYMBOL_CHECK (s)) | |
1713 | return 0; | |
1714 | ||
1715 | flags = s->bsym->flags; | |
252b5132 RH |
1716 | |
1717 | return (flags & BSF_FUNCTION) != 0; | |
1718 | } | |
1719 | ||
1720 | int | |
74937d39 | 1721 | S_IS_EXTERNAL (symbolS *s) |
252b5132 | 1722 | { |
49309057 ILT |
1723 | flagword flags; |
1724 | ||
1725 | if (LOCAL_SYMBOL_CHECK (s)) | |
1726 | return 0; | |
1727 | ||
1728 | flags = s->bsym->flags; | |
252b5132 | 1729 | |
7c743825 | 1730 | /* Sanity check. */ |
252b5132 RH |
1731 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1732 | abort (); | |
1733 | ||
1734 | return (flags & BSF_GLOBAL) != 0; | |
1735 | } | |
1736 | ||
1737 | int | |
74937d39 | 1738 | S_IS_WEAK (symbolS *s) |
252b5132 | 1739 | { |
49309057 ILT |
1740 | if (LOCAL_SYMBOL_CHECK (s)) |
1741 | return 0; | |
252b5132 RH |
1742 | return (s->bsym->flags & BSF_WEAK) != 0; |
1743 | } | |
1744 | ||
1745 | int | |
74937d39 | 1746 | S_IS_COMMON (symbolS *s) |
252b5132 | 1747 | { |
49309057 ILT |
1748 | if (LOCAL_SYMBOL_CHECK (s)) |
1749 | return 0; | |
252b5132 RH |
1750 | return bfd_is_com_section (s->bsym->section); |
1751 | } | |
1752 | ||
1753 | int | |
74937d39 | 1754 | S_IS_DEFINED (symbolS *s) |
252b5132 | 1755 | { |
49309057 ILT |
1756 | if (LOCAL_SYMBOL_CHECK (s)) |
1757 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1758 | return s->bsym->section != undefined_section; |
1759 | } | |
1760 | ||
a161fe53 AM |
1761 | |
1762 | #ifndef EXTERN_FORCE_RELOC | |
1763 | #define EXTERN_FORCE_RELOC IS_ELF | |
1764 | #endif | |
1765 | ||
1766 | /* Return true for symbols that should not be reduced to section | |
1767 | symbols or eliminated from expressions, because they may be | |
1768 | overridden by the linker. */ | |
1769 | int | |
74937d39 | 1770 | S_FORCE_RELOC (symbolS *s, int strict) |
a161fe53 AM |
1771 | { |
1772 | if (LOCAL_SYMBOL_CHECK (s)) | |
1773 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
1774 | ||
ae6063d4 AM |
1775 | return ((strict |
1776 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
1777 | || (EXTERN_FORCE_RELOC | |
1778 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
a161fe53 AM |
1779 | || s->bsym->section == undefined_section |
1780 | || bfd_is_com_section (s->bsym->section)); | |
1781 | } | |
1782 | ||
252b5132 | 1783 | int |
74937d39 | 1784 | S_IS_DEBUG (symbolS *s) |
252b5132 | 1785 | { |
49309057 ILT |
1786 | if (LOCAL_SYMBOL_CHECK (s)) |
1787 | return 0; | |
252b5132 RH |
1788 | if (s->bsym->flags & BSF_DEBUGGING) |
1789 | return 1; | |
1790 | return 0; | |
1791 | } | |
1792 | ||
1793 | int | |
74937d39 | 1794 | S_IS_LOCAL (symbolS *s) |
252b5132 | 1795 | { |
49309057 | 1796 | flagword flags; |
252b5132 RH |
1797 | const char *name; |
1798 | ||
49309057 ILT |
1799 | if (LOCAL_SYMBOL_CHECK (s)) |
1800 | return 1; | |
1801 | ||
1802 | flags = s->bsym->flags; | |
1803 | ||
7c743825 | 1804 | /* Sanity check. */ |
252b5132 RH |
1805 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1806 | abort (); | |
1807 | ||
1808 | if (bfd_get_section (s->bsym) == reg_section) | |
1809 | return 1; | |
1810 | ||
1811 | if (flag_strip_local_absolute | |
bb82af9f NC |
1812 | /* Keep BSF_FILE symbols in order to allow debuggers to identify |
1813 | the source file even when the object file is stripped. */ | |
1814 | && (flags & (BSF_GLOBAL | BSF_FILE)) == 0 | |
252b5132 RH |
1815 | && bfd_get_section (s->bsym) == absolute_section) |
1816 | return 1; | |
1817 | ||
1818 | name = S_GET_NAME (s); | |
1819 | return (name != NULL | |
1820 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1821 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1822 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1823 | || (! flag_keep_locals |
1824 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1825 | || (flag_mri | |
1826 | && name[0] == '?' | |
1827 | && name[1] == '?'))))); | |
1828 | } | |
1829 | ||
1830 | int | |
74937d39 | 1831 | S_IS_EXTERN (symbolS *s) |
252b5132 RH |
1832 | { |
1833 | return S_IS_EXTERNAL (s); | |
1834 | } | |
1835 | ||
1836 | int | |
74937d39 | 1837 | S_IS_STABD (symbolS *s) |
252b5132 RH |
1838 | { |
1839 | return S_GET_NAME (s) == 0; | |
1840 | } | |
1841 | ||
9758f3fc | 1842 | const char * |
74937d39 | 1843 | S_GET_NAME (symbolS *s) |
252b5132 | 1844 | { |
49309057 ILT |
1845 | if (LOCAL_SYMBOL_CHECK (s)) |
1846 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1847 | return s->bsym->name; |
1848 | } | |
1849 | ||
1850 | segT | |
74937d39 | 1851 | S_GET_SEGMENT (symbolS *s) |
252b5132 | 1852 | { |
49309057 ILT |
1853 | if (LOCAL_SYMBOL_CHECK (s)) |
1854 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1855 | return s->bsym->section; |
1856 | } | |
1857 | ||
1858 | void | |
74937d39 | 1859 | S_SET_SEGMENT (symbolS *s, segT seg) |
252b5132 RH |
1860 | { |
1861 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1862 | faults assigning back to const global symbols such as *ABS*, but it | |
1863 | shouldn't happen anyway. */ | |
1864 | ||
49309057 ILT |
1865 | if (LOCAL_SYMBOL_CHECK (s)) |
1866 | { | |
1867 | if (seg == reg_section) | |
1868 | s = local_symbol_convert ((struct local_symbol *) s); | |
1869 | else | |
1870 | { | |
1871 | ((struct local_symbol *) s)->lsy_section = seg; | |
1872 | return; | |
1873 | } | |
1874 | } | |
1875 | ||
252b5132 RH |
1876 | if (s->bsym->flags & BSF_SECTION_SYM) |
1877 | { | |
1878 | if (s->bsym->section != seg) | |
7c743825 | 1879 | abort (); |
252b5132 RH |
1880 | } |
1881 | else | |
1882 | s->bsym->section = seg; | |
1883 | } | |
1884 | ||
1885 | void | |
74937d39 | 1886 | S_SET_EXTERNAL (symbolS *s) |
252b5132 | 1887 | { |
49309057 ILT |
1888 | if (LOCAL_SYMBOL_CHECK (s)) |
1889 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1890 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1891 | { | |
1892 | /* Let .weak override .global. */ | |
1893 | return; | |
1894 | } | |
4d7c34bf NC |
1895 | if (s->bsym->flags & BSF_SECTION_SYM) |
1896 | { | |
1897 | char * file; | |
1898 | unsigned int line; | |
d1a6c242 | 1899 | |
4d7c34bf NC |
1900 | /* Do not reassign section symbols. */ |
1901 | as_where (& file, & line); | |
1902 | as_warn_where (file, line, | |
0e389e77 | 1903 | _("section symbols are already global")); |
4d7c34bf NC |
1904 | return; |
1905 | } | |
252b5132 | 1906 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1907 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
252b5132 RH |
1908 | } |
1909 | ||
1910 | void | |
74937d39 | 1911 | S_CLEAR_EXTERNAL (symbolS *s) |
252b5132 | 1912 | { |
49309057 ILT |
1913 | if (LOCAL_SYMBOL_CHECK (s)) |
1914 | return; | |
252b5132 RH |
1915 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1916 | { | |
1917 | /* Let .weak override. */ | |
1918 | return; | |
1919 | } | |
1920 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1921 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1922 | } |
1923 | ||
1924 | void | |
74937d39 | 1925 | S_SET_WEAK (symbolS *s) |
252b5132 | 1926 | { |
49309057 ILT |
1927 | if (LOCAL_SYMBOL_CHECK (s)) |
1928 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1929 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 1930 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
1931 | } |
1932 | ||
00f7efb6 | 1933 | void |
74937d39 | 1934 | S_SET_THREAD_LOCAL (symbolS *s) |
00f7efb6 JJ |
1935 | { |
1936 | if (LOCAL_SYMBOL_CHECK (s)) | |
1937 | s = local_symbol_convert ((struct local_symbol *) s); | |
1938 | if (bfd_is_com_section (s->bsym->section) | |
1939 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
1940 | return; | |
1941 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
1942 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
1943 | as_bad (_("Accessing function `%s' as thread-local object"), | |
1944 | S_GET_NAME (s)); | |
1945 | else if (! bfd_is_und_section (s->bsym->section) | |
1946 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
1947 | as_bad (_("Accessing `%s' as thread-local object"), | |
1948 | S_GET_NAME (s)); | |
1949 | } | |
1950 | ||
252b5132 | 1951 | void |
74937d39 | 1952 | S_SET_NAME (symbolS *s, char *name) |
252b5132 | 1953 | { |
49309057 ILT |
1954 | if (LOCAL_SYMBOL_CHECK (s)) |
1955 | { | |
1956 | ((struct local_symbol *) s)->lsy_name = name; | |
1957 | return; | |
1958 | } | |
252b5132 RH |
1959 | s->bsym->name = name; |
1960 | } | |
1961 | #endif /* BFD_ASSEMBLER */ | |
1962 | ||
49309057 ILT |
1963 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
1964 | ||
1965 | /* Return the previous symbol in a chain. */ | |
1966 | ||
1967 | symbolS * | |
74937d39 | 1968 | symbol_previous (symbolS *s) |
49309057 ILT |
1969 | { |
1970 | if (LOCAL_SYMBOL_CHECK (s)) | |
1971 | abort (); | |
1972 | return s->sy_previous; | |
1973 | } | |
1974 | ||
1975 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
1976 | ||
1977 | /* Return the next symbol in a chain. */ | |
1978 | ||
1979 | symbolS * | |
74937d39 | 1980 | symbol_next (symbolS *s) |
49309057 ILT |
1981 | { |
1982 | if (LOCAL_SYMBOL_CHECK (s)) | |
1983 | abort (); | |
1984 | return s->sy_next; | |
1985 | } | |
1986 | ||
1987 | /* Return a pointer to the value of a symbol as an expression. */ | |
1988 | ||
1989 | expressionS * | |
74937d39 | 1990 | symbol_get_value_expression (symbolS *s) |
49309057 ILT |
1991 | { |
1992 | if (LOCAL_SYMBOL_CHECK (s)) | |
1993 | s = local_symbol_convert ((struct local_symbol *) s); | |
1994 | return &s->sy_value; | |
1995 | } | |
1996 | ||
1997 | /* Set the value of a symbol to an expression. */ | |
1998 | ||
1999 | void | |
74937d39 | 2000 | symbol_set_value_expression (symbolS *s, const expressionS *exp) |
49309057 ILT |
2001 | { |
2002 | if (LOCAL_SYMBOL_CHECK (s)) | |
2003 | s = local_symbol_convert ((struct local_symbol *) s); | |
2004 | s->sy_value = *exp; | |
2005 | } | |
2006 | ||
b7d6ed97 RH |
2007 | /* Set the value of SYM to the current position in the current segment. */ |
2008 | ||
2009 | void | |
74937d39 | 2010 | symbol_set_value_now (symbolS *sym) |
b7d6ed97 RH |
2011 | { |
2012 | S_SET_SEGMENT (sym, now_seg); | |
2013 | S_SET_VALUE (sym, frag_now_fix ()); | |
2014 | symbol_set_frag (sym, frag_now); | |
2015 | } | |
2016 | ||
49309057 ILT |
2017 | /* Set the frag of a symbol. */ |
2018 | ||
2019 | void | |
74937d39 | 2020 | symbol_set_frag (symbolS *s, fragS *f) |
49309057 | 2021 | { |
a1605869 | 2022 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2023 | if (LOCAL_SYMBOL_CHECK (s)) |
2024 | { | |
2025 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2026 | return; | |
2027 | } | |
a1605869 | 2028 | #endif |
49309057 ILT |
2029 | s->sy_frag = f; |
2030 | } | |
2031 | ||
2032 | /* Return the frag of a symbol. */ | |
2033 | ||
2034 | fragS * | |
74937d39 | 2035 | symbol_get_frag (symbolS *s) |
49309057 | 2036 | { |
a1605869 | 2037 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2038 | if (LOCAL_SYMBOL_CHECK (s)) |
2039 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 2040 | #endif |
49309057 ILT |
2041 | return s->sy_frag; |
2042 | } | |
2043 | ||
2044 | /* Mark a symbol as having been used. */ | |
2045 | ||
2046 | void | |
74937d39 | 2047 | symbol_mark_used (symbolS *s) |
49309057 ILT |
2048 | { |
2049 | if (LOCAL_SYMBOL_CHECK (s)) | |
2050 | return; | |
2051 | s->sy_used = 1; | |
2052 | } | |
2053 | ||
2054 | /* Clear the mark of whether a symbol has been used. */ | |
2055 | ||
2056 | void | |
74937d39 | 2057 | symbol_clear_used (symbolS *s) |
49309057 ILT |
2058 | { |
2059 | if (LOCAL_SYMBOL_CHECK (s)) | |
2060 | s = local_symbol_convert ((struct local_symbol *) s); | |
2061 | s->sy_used = 0; | |
2062 | } | |
2063 | ||
2064 | /* Return whether a symbol has been used. */ | |
2065 | ||
2066 | int | |
74937d39 | 2067 | symbol_used_p (symbolS *s) |
49309057 ILT |
2068 | { |
2069 | if (LOCAL_SYMBOL_CHECK (s)) | |
2070 | return 1; | |
2071 | return s->sy_used; | |
2072 | } | |
2073 | ||
2074 | /* Mark a symbol as having been used in a reloc. */ | |
2075 | ||
2076 | void | |
74937d39 | 2077 | symbol_mark_used_in_reloc (symbolS *s) |
49309057 ILT |
2078 | { |
2079 | if (LOCAL_SYMBOL_CHECK (s)) | |
2080 | s = local_symbol_convert ((struct local_symbol *) s); | |
2081 | s->sy_used_in_reloc = 1; | |
2082 | } | |
2083 | ||
2084 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2085 | ||
2086 | void | |
74937d39 | 2087 | symbol_clear_used_in_reloc (symbolS *s) |
49309057 ILT |
2088 | { |
2089 | if (LOCAL_SYMBOL_CHECK (s)) | |
2090 | return; | |
2091 | s->sy_used_in_reloc = 0; | |
2092 | } | |
2093 | ||
2094 | /* Return whether a symbol has been used in a reloc. */ | |
2095 | ||
2096 | int | |
74937d39 | 2097 | symbol_used_in_reloc_p (symbolS *s) |
49309057 ILT |
2098 | { |
2099 | if (LOCAL_SYMBOL_CHECK (s)) | |
2100 | return 0; | |
2101 | return s->sy_used_in_reloc; | |
2102 | } | |
2103 | ||
2104 | /* Mark a symbol as an MRI common symbol. */ | |
2105 | ||
2106 | void | |
74937d39 | 2107 | symbol_mark_mri_common (symbolS *s) |
49309057 ILT |
2108 | { |
2109 | if (LOCAL_SYMBOL_CHECK (s)) | |
2110 | s = local_symbol_convert ((struct local_symbol *) s); | |
2111 | s->sy_mri_common = 1; | |
2112 | } | |
2113 | ||
2114 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2115 | ||
2116 | void | |
74937d39 | 2117 | symbol_clear_mri_common (symbolS *s) |
49309057 ILT |
2118 | { |
2119 | if (LOCAL_SYMBOL_CHECK (s)) | |
2120 | return; | |
2121 | s->sy_mri_common = 0; | |
2122 | } | |
2123 | ||
2124 | /* Return whether a symbol is an MRI common symbol. */ | |
2125 | ||
2126 | int | |
74937d39 | 2127 | symbol_mri_common_p (symbolS *s) |
49309057 ILT |
2128 | { |
2129 | if (LOCAL_SYMBOL_CHECK (s)) | |
2130 | return 0; | |
2131 | return s->sy_mri_common; | |
2132 | } | |
2133 | ||
2134 | /* Mark a symbol as having been written. */ | |
2135 | ||
2136 | void | |
74937d39 | 2137 | symbol_mark_written (symbolS *s) |
49309057 ILT |
2138 | { |
2139 | if (LOCAL_SYMBOL_CHECK (s)) | |
2140 | return; | |
2141 | s->written = 1; | |
2142 | } | |
2143 | ||
2144 | /* Clear the mark of whether a symbol has been written. */ | |
2145 | ||
2146 | void | |
74937d39 | 2147 | symbol_clear_written (symbolS *s) |
49309057 ILT |
2148 | { |
2149 | if (LOCAL_SYMBOL_CHECK (s)) | |
2150 | return; | |
2151 | s->written = 0; | |
2152 | } | |
2153 | ||
2154 | /* Return whether a symbol has been written. */ | |
2155 | ||
2156 | int | |
74937d39 | 2157 | symbol_written_p (symbolS *s) |
49309057 ILT |
2158 | { |
2159 | if (LOCAL_SYMBOL_CHECK (s)) | |
2160 | return 0; | |
2161 | return s->written; | |
2162 | } | |
2163 | ||
2164 | /* Mark a symbol has having been resolved. */ | |
2165 | ||
2166 | void | |
74937d39 | 2167 | symbol_mark_resolved (symbolS *s) |
49309057 | 2168 | { |
a1605869 | 2169 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2170 | if (LOCAL_SYMBOL_CHECK (s)) |
2171 | { | |
2172 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2173 | return; | |
2174 | } | |
a1605869 | 2175 | #endif |
49309057 ILT |
2176 | s->sy_resolved = 1; |
2177 | } | |
2178 | ||
2179 | /* Return whether a symbol has been resolved. */ | |
2180 | ||
2181 | int | |
74937d39 | 2182 | symbol_resolved_p (symbolS *s) |
49309057 | 2183 | { |
a1605869 | 2184 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2185 | if (LOCAL_SYMBOL_CHECK (s)) |
2186 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2187 | #endif |
49309057 ILT |
2188 | return s->sy_resolved; |
2189 | } | |
2190 | ||
2191 | /* Return whether a symbol is a section symbol. */ | |
2192 | ||
2193 | int | |
74937d39 | 2194 | symbol_section_p (symbolS *s ATTRIBUTE_UNUSED) |
49309057 ILT |
2195 | { |
2196 | if (LOCAL_SYMBOL_CHECK (s)) | |
2197 | return 0; | |
2198 | #ifdef BFD_ASSEMBLER | |
2199 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2200 | #else | |
7c743825 | 2201 | /* FIXME. */ |
49309057 ILT |
2202 | return 0; |
2203 | #endif | |
2204 | } | |
2205 | ||
2206 | /* Return whether a symbol is equated to another symbol. */ | |
2207 | ||
2208 | int | |
74937d39 | 2209 | symbol_equated_p (symbolS *s) |
49309057 ILT |
2210 | { |
2211 | if (LOCAL_SYMBOL_CHECK (s)) | |
2212 | return 0; | |
2213 | return s->sy_value.X_op == O_symbol; | |
2214 | } | |
2215 | ||
e0890092 AM |
2216 | /* Return whether a symbol is equated to another symbol, and should be |
2217 | treated specially when writing out relocs. */ | |
2218 | ||
2219 | int | |
74937d39 | 2220 | symbol_equated_reloc_p (symbolS *s) |
e0890092 AM |
2221 | { |
2222 | if (LOCAL_SYMBOL_CHECK (s)) | |
2223 | return 0; | |
2224 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2225 | resolve_symbol_value to flag expression syms that have been | |
2226 | equated. */ | |
2227 | return (s->sy_value.X_op == O_symbol | |
2228 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) | |
2229 | || ! S_IS_DEFINED (s) | |
2230 | || S_IS_COMMON (s))); | |
2231 | } | |
2232 | ||
49309057 ILT |
2233 | /* Return whether a symbol has a constant value. */ |
2234 | ||
2235 | int | |
74937d39 | 2236 | symbol_constant_p (symbolS *s) |
49309057 ILT |
2237 | { |
2238 | if (LOCAL_SYMBOL_CHECK (s)) | |
2239 | return 1; | |
2240 | return s->sy_value.X_op == O_constant; | |
2241 | } | |
2242 | ||
2243 | #ifdef BFD_ASSEMBLER | |
2244 | ||
2245 | /* Return the BFD symbol for a symbol. */ | |
2246 | ||
2247 | asymbol * | |
74937d39 | 2248 | symbol_get_bfdsym (symbolS *s) |
49309057 ILT |
2249 | { |
2250 | if (LOCAL_SYMBOL_CHECK (s)) | |
2251 | s = local_symbol_convert ((struct local_symbol *) s); | |
2252 | return s->bsym; | |
2253 | } | |
2254 | ||
2255 | /* Set the BFD symbol for a symbol. */ | |
2256 | ||
2257 | void | |
74937d39 | 2258 | symbol_set_bfdsym (symbolS *s, asymbol *bsym) |
49309057 ILT |
2259 | { |
2260 | if (LOCAL_SYMBOL_CHECK (s)) | |
2261 | s = local_symbol_convert ((struct local_symbol *) s); | |
22fe14ad NC |
2262 | /* Usually, it is harmless to reset a symbol to a BFD section |
2263 | symbol. For example, obj_elf_change_section sets the BFD symbol | |
2264 | of an old symbol with the newly created section symbol. But when | |
2265 | we have multiple sections with the same name, the newly created | |
2266 | section may have the same name as an old section. We check if the | |
2267 | old symbol has been already marked as a section symbol before | |
2268 | resetting it. */ | |
2269 | if ((s->bsym->flags & BSF_SECTION_SYM) == 0) | |
2270 | s->bsym = bsym; | |
2271 | /* else XXX - What do we do now ? */ | |
49309057 ILT |
2272 | } |
2273 | ||
2274 | #endif /* BFD_ASSEMBLER */ | |
2275 | ||
2276 | #ifdef OBJ_SYMFIELD_TYPE | |
2277 | ||
2278 | /* Get a pointer to the object format information for a symbol. */ | |
2279 | ||
2280 | OBJ_SYMFIELD_TYPE * | |
74937d39 | 2281 | symbol_get_obj (symbolS *s) |
49309057 ILT |
2282 | { |
2283 | if (LOCAL_SYMBOL_CHECK (s)) | |
2284 | s = local_symbol_convert ((struct local_symbol *) s); | |
2285 | return &s->sy_obj; | |
2286 | } | |
2287 | ||
2288 | /* Set the object format information for a symbol. */ | |
2289 | ||
2290 | void | |
74937d39 | 2291 | symbol_set_obj (symbolS *s, OBJ_SYMFIELD_TYPE *o) |
49309057 ILT |
2292 | { |
2293 | if (LOCAL_SYMBOL_CHECK (s)) | |
2294 | s = local_symbol_convert ((struct local_symbol *) s); | |
2295 | s->sy_obj = *o; | |
2296 | } | |
2297 | ||
2298 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2299 | ||
2300 | #ifdef TC_SYMFIELD_TYPE | |
2301 | ||
2302 | /* Get a pointer to the processor information for a symbol. */ | |
2303 | ||
2304 | TC_SYMFIELD_TYPE * | |
74937d39 | 2305 | symbol_get_tc (symbolS *s) |
49309057 ILT |
2306 | { |
2307 | if (LOCAL_SYMBOL_CHECK (s)) | |
2308 | s = local_symbol_convert ((struct local_symbol *) s); | |
2309 | return &s->sy_tc; | |
2310 | } | |
2311 | ||
2312 | /* Set the processor information for a symbol. */ | |
2313 | ||
2314 | void | |
74937d39 | 2315 | symbol_set_tc (symbolS *s, TC_SYMFIELD_TYPE *o) |
49309057 ILT |
2316 | { |
2317 | if (LOCAL_SYMBOL_CHECK (s)) | |
2318 | s = local_symbol_convert ((struct local_symbol *) s); | |
2319 | s->sy_tc = *o; | |
2320 | } | |
2321 | ||
2322 | #endif /* TC_SYMFIELD_TYPE */ | |
2323 | ||
252b5132 | 2324 | void |
74937d39 | 2325 | symbol_begin (void) |
252b5132 RH |
2326 | { |
2327 | symbol_lastP = NULL; | |
7c743825 | 2328 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2329 | sy_hash = hash_new (); |
49309057 ILT |
2330 | #ifdef BFD_ASSEMBLER |
2331 | local_hash = hash_new (); | |
2332 | #endif | |
252b5132 RH |
2333 | |
2334 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2335 | #ifdef BFD_ASSEMBLER | |
2336 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2337 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2338 | #endif | |
2339 | #else | |
7c743825 | 2340 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2341 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2342 | #endif | |
2343 | abs_symbol.sy_value.X_op = O_constant; | |
2344 | abs_symbol.sy_frag = &zero_address_frag; | |
2345 | ||
2346 | if (LOCAL_LABELS_FB) | |
2347 | fb_label_init (); | |
2348 | } | |
252b5132 RH |
2349 | \f |
2350 | int indent_level; | |
2351 | ||
2352 | /* Maximum indent level. | |
2353 | Available for modification inside a gdb session. */ | |
2354 | int max_indent_level = 8; | |
2355 | ||
2356 | #if 0 | |
2357 | ||
2358 | static void | |
74937d39 | 2359 | indent (void) |
252b5132 RH |
2360 | { |
2361 | printf ("%*s", indent_level * 4, ""); | |
2362 | } | |
2363 | ||
2364 | #endif | |
2365 | ||
2366 | void | |
74937d39 | 2367 | print_symbol_value_1 (FILE *file, symbolS *sym) |
252b5132 RH |
2368 | { |
2369 | const char *name = S_GET_NAME (sym); | |
2370 | if (!name || !name[0]) | |
2371 | name = "(unnamed)"; | |
2372 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2373 | |
2374 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2375 | { | |
a1605869 | 2376 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2377 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2378 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2379 | && local_symbol_get_frag (locsym) != NULL) | |
2380 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2381 | if (local_symbol_resolved_p (locsym)) | |
2382 | fprintf (file, " resolved"); | |
2383 | fprintf (file, " local"); | |
a1605869 | 2384 | #endif |
49309057 ILT |
2385 | } |
2386 | else | |
2387 | { | |
2388 | if (sym->sy_frag != &zero_address_frag) | |
2389 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2390 | if (sym->written) | |
2391 | fprintf (file, " written"); | |
2392 | if (sym->sy_resolved) | |
2393 | fprintf (file, " resolved"); | |
2394 | else if (sym->sy_resolving) | |
2395 | fprintf (file, " resolving"); | |
2396 | if (sym->sy_used_in_reloc) | |
2397 | fprintf (file, " used-in-reloc"); | |
2398 | if (sym->sy_used) | |
2399 | fprintf (file, " used"); | |
2400 | if (S_IS_LOCAL (sym)) | |
2401 | fprintf (file, " local"); | |
2402 | if (S_IS_EXTERN (sym)) | |
2403 | fprintf (file, " extern"); | |
2404 | if (S_IS_DEBUG (sym)) | |
2405 | fprintf (file, " debug"); | |
2406 | if (S_IS_DEFINED (sym)) | |
2407 | fprintf (file, " defined"); | |
2408 | } | |
252b5132 | 2409 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2410 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2411 | { |
2412 | segT s = S_GET_SEGMENT (sym); | |
2413 | ||
2414 | if (s != undefined_section | |
411863a4 | 2415 | && s != expr_section) |
252b5132 RH |
2416 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); |
2417 | } | |
2418 | else if (indent_level < max_indent_level | |
2419 | && S_GET_SEGMENT (sym) != undefined_section) | |
2420 | { | |
2421 | indent_level++; | |
2422 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2423 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2424 | if (LOCAL_SYMBOL_CHECK (sym)) |
2425 | fprintf (file, "constant %lx", | |
bd780143 | 2426 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2427 | else |
a1605869 | 2428 | #endif |
49309057 | 2429 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2430 | fprintf (file, ">"); |
2431 | indent_level--; | |
2432 | } | |
2433 | fflush (file); | |
2434 | } | |
2435 | ||
2436 | void | |
74937d39 | 2437 | print_symbol_value (symbolS *sym) |
252b5132 RH |
2438 | { |
2439 | indent_level = 0; | |
2440 | print_symbol_value_1 (stderr, sym); | |
2441 | fprintf (stderr, "\n"); | |
2442 | } | |
2443 | ||
2444 | static void | |
74937d39 | 2445 | print_binary (FILE *file, const char *name, expressionS *exp) |
252b5132 RH |
2446 | { |
2447 | indent_level++; | |
2448 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2449 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2450 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2451 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2452 | fprintf (file, ">"); | |
2453 | indent_level--; | |
2454 | } | |
2455 | ||
2456 | void | |
74937d39 | 2457 | print_expr_1 (FILE *file, expressionS *exp) |
252b5132 RH |
2458 | { |
2459 | fprintf (file, "expr %lx ", (long) exp); | |
2460 | switch (exp->X_op) | |
2461 | { | |
2462 | case O_illegal: | |
2463 | fprintf (file, "illegal"); | |
2464 | break; | |
2465 | case O_absent: | |
2466 | fprintf (file, "absent"); | |
2467 | break; | |
2468 | case O_constant: | |
2469 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2470 | break; | |
2471 | case O_symbol: | |
2472 | indent_level++; | |
2473 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2474 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2475 | fprintf (file, ">"); | |
2476 | maybe_print_addnum: | |
2477 | if (exp->X_add_number) | |
2478 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2479 | (long) exp->X_add_number); | |
2480 | indent_level--; | |
2481 | break; | |
2482 | case O_register: | |
2483 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2484 | break; | |
2485 | case O_big: | |
2486 | fprintf (file, "big"); | |
2487 | break; | |
2488 | case O_uminus: | |
2489 | fprintf (file, "uminus -<"); | |
2490 | indent_level++; | |
2491 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2492 | fprintf (file, ">"); | |
2493 | goto maybe_print_addnum; | |
2494 | case O_bit_not: | |
2495 | fprintf (file, "bit_not"); | |
2496 | break; | |
2497 | case O_multiply: | |
2498 | print_binary (file, "multiply", exp); | |
2499 | break; | |
2500 | case O_divide: | |
2501 | print_binary (file, "divide", exp); | |
2502 | break; | |
2503 | case O_modulus: | |
2504 | print_binary (file, "modulus", exp); | |
2505 | break; | |
2506 | case O_left_shift: | |
2507 | print_binary (file, "lshift", exp); | |
2508 | break; | |
2509 | case O_right_shift: | |
2510 | print_binary (file, "rshift", exp); | |
2511 | break; | |
2512 | case O_bit_inclusive_or: | |
2513 | print_binary (file, "bit_ior", exp); | |
2514 | break; | |
2515 | case O_bit_exclusive_or: | |
2516 | print_binary (file, "bit_xor", exp); | |
2517 | break; | |
2518 | case O_bit_and: | |
2519 | print_binary (file, "bit_and", exp); | |
2520 | break; | |
2521 | case O_eq: | |
2522 | print_binary (file, "eq", exp); | |
2523 | break; | |
2524 | case O_ne: | |
2525 | print_binary (file, "ne", exp); | |
2526 | break; | |
2527 | case O_lt: | |
2528 | print_binary (file, "lt", exp); | |
2529 | break; | |
2530 | case O_le: | |
2531 | print_binary (file, "le", exp); | |
2532 | break; | |
2533 | case O_ge: | |
2534 | print_binary (file, "ge", exp); | |
2535 | break; | |
2536 | case O_gt: | |
2537 | print_binary (file, "gt", exp); | |
2538 | break; | |
2539 | case O_logical_and: | |
2540 | print_binary (file, "logical_and", exp); | |
2541 | break; | |
2542 | case O_logical_or: | |
2543 | print_binary (file, "logical_or", exp); | |
2544 | break; | |
2545 | case O_add: | |
2546 | indent_level++; | |
2547 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2548 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2549 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2550 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2551 | fprintf (file, ">"); | |
2552 | goto maybe_print_addnum; | |
2553 | case O_subtract: | |
2554 | indent_level++; | |
2555 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2556 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2557 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2558 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2559 | fprintf (file, ">"); | |
2560 | goto maybe_print_addnum; | |
2561 | default: | |
2562 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2563 | break; | |
2564 | } | |
2565 | fflush (stdout); | |
2566 | } | |
2567 | ||
2568 | void | |
74937d39 | 2569 | print_expr (expressionS *exp) |
252b5132 RH |
2570 | { |
2571 | print_expr_1 (stderr, exp); | |
2572 | fprintf (stderr, "\n"); | |
2573 | } | |
2574 | ||
2575 | void | |
74937d39 | 2576 | symbol_print_statistics (FILE *file) |
252b5132 RH |
2577 | { |
2578 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2579 | #ifdef BFD_ASSEMBLER |
2580 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2581 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2582 | local_symbol_count, local_symbol_conversion_count); | |
2583 | #endif | |
252b5132 | 2584 | } |