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, |
1d3b2b27 | 3 | 1999, 2000, 2001, 2002, 2003 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
21 | 02111-1307, USA. */ | |
22 | ||
7c743825 | 23 | /* #define DEBUG_SYMS / * to debug symbol list maintenance. */ |
252b5132 | 24 | |
252b5132 RH |
25 | #include "as.h" |
26 | ||
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "obstack.h" /* For "symbols.h" */ |
29 | #include "subsegs.h" | |
30 | ||
49309057 ILT |
31 | #include "struc-symbol.h" |
32 | ||
252b5132 RH |
33 | /* This is non-zero if symbols are case sensitive, which is the |
34 | default. */ | |
35 | int symbols_case_sensitive = 1; | |
36 | ||
37 | #ifndef WORKING_DOT_WORD | |
38 | extern int new_broken_words; | |
39 | #endif | |
40 | ||
41 | /* symbol-name => struct symbol pointer */ | |
42 | static struct hash_control *sy_hash; | |
43 | ||
49309057 ILT |
44 | /* Table of local symbols. */ |
45 | static struct hash_control *local_hash; | |
46 | ||
7c743825 | 47 | /* Below are commented in "symbols.h". */ |
252b5132 RH |
48 | symbolS *symbol_rootP; |
49 | symbolS *symbol_lastP; | |
50 | symbolS abs_symbol; | |
51 | ||
52 | #ifdef DEBUG_SYMS | |
53 | #define debug_verify_symchain verify_symbol_chain | |
54 | #else | |
55 | #define debug_verify_symchain(root, last) ((void) 0) | |
56 | #endif | |
57 | ||
aa257fcd NC |
58 | #define DOLLAR_LABEL_CHAR '\001' |
59 | #define LOCAL_LABEL_CHAR '\002' | |
60 | ||
252b5132 RH |
61 | struct obstack notes; |
62 | ||
8d28c9d7 | 63 | static char *save_symbol_name PARAMS ((const char *)); |
252b5132 RH |
64 | static void fb_label_init PARAMS ((void)); |
65 | static long dollar_label_instance PARAMS ((long)); | |
66 | static long fb_label_instance PARAMS ((long)); | |
67 | ||
68 | static void print_binary PARAMS ((FILE *, const char *, expressionS *)); | |
0909233e | 69 | static void report_op_error PARAMS ((symbolS *, symbolS *, symbolS *)); |
252b5132 | 70 | |
7c743825 | 71 | /* Return a pointer to a new symbol. Die if we can't make a new |
252b5132 RH |
72 | symbol. Fill in the symbol's values. Add symbol to end of symbol |
73 | chain. | |
7c743825 | 74 | |
252b5132 RH |
75 | This function should be called in the general case of creating a |
76 | symbol. However, if the output file symbol table has already been | |
77 | set, and you are certain that this symbol won't be wanted in the | |
78 | output file, you can call symbol_create. */ | |
79 | ||
80 | symbolS * | |
81 | symbol_new (name, segment, valu, frag) | |
82 | const char *name; | |
83 | segT segment; | |
84 | valueT valu; | |
85 | fragS *frag; | |
86 | { | |
87 | symbolS *symbolP = symbol_create (name, segment, valu, frag); | |
88 | ||
7c743825 | 89 | /* Link to end of symbol chain. */ |
252b5132 RH |
90 | #ifdef BFD_ASSEMBLER |
91 | { | |
92 | extern int symbol_table_frozen; | |
93 | if (symbol_table_frozen) | |
94 | abort (); | |
95 | } | |
96 | #endif | |
97 | symbol_append (symbolP, symbol_lastP, &symbol_rootP, &symbol_lastP); | |
98 | ||
99 | return symbolP; | |
100 | } | |
101 | ||
49309057 ILT |
102 | /* Save a symbol name on a permanent obstack, and convert it according |
103 | to the object file format. */ | |
104 | ||
105 | static char * | |
106 | save_symbol_name (name) | |
107 | const char *name; | |
252b5132 RH |
108 | { |
109 | unsigned int name_length; | |
49309057 | 110 | char *ret; |
252b5132 | 111 | |
7c743825 | 112 | name_length = strlen (name) + 1; /* +1 for \0. */ |
252b5132 | 113 | obstack_grow (¬es, name, name_length); |
49309057 ILT |
114 | ret = obstack_finish (¬es); |
115 | ||
252b5132 | 116 | #ifdef STRIP_UNDERSCORE |
49309057 ILT |
117 | if (ret[0] == '_') |
118 | ++ret; | |
252b5132 RH |
119 | #endif |
120 | ||
121 | #ifdef tc_canonicalize_symbol_name | |
49309057 | 122 | ret = tc_canonicalize_symbol_name (ret); |
252b5132 RH |
123 | #endif |
124 | ||
125 | if (! symbols_case_sensitive) | |
126 | { | |
3882b010 | 127 | char *s; |
252b5132 | 128 | |
3882b010 L |
129 | for (s = ret; *s != '\0'; s++) |
130 | *s = TOUPPER (*s); | |
252b5132 RH |
131 | } |
132 | ||
49309057 ILT |
133 | return ret; |
134 | } | |
135 | ||
136 | symbolS * | |
137 | symbol_create (name, segment, valu, frag) | |
7c743825 KH |
138 | const char *name; /* It is copied, the caller can destroy/modify. */ |
139 | segT segment; /* Segment identifier (SEG_<something>). */ | |
140 | valueT valu; /* Symbol value. */ | |
141 | fragS *frag; /* Associated fragment. */ | |
49309057 ILT |
142 | { |
143 | char *preserved_copy_of_name; | |
144 | symbolS *symbolP; | |
145 | ||
146 | preserved_copy_of_name = save_symbol_name (name); | |
147 | ||
252b5132 RH |
148 | symbolP = (symbolS *) obstack_alloc (¬es, sizeof (symbolS)); |
149 | ||
7c743825 | 150 | /* symbol must be born in some fixed state. This seems as good as any. */ |
252b5132 RH |
151 | memset (symbolP, 0, sizeof (symbolS)); |
152 | ||
153 | #ifdef BFD_ASSEMBLER | |
154 | symbolP->bsym = bfd_make_empty_symbol (stdoutput); | |
155 | if (symbolP->bsym == NULL) | |
156 | as_perror ("%s", "bfd_make_empty_symbol"); | |
157 | symbolP->bsym->udata.p = (PTR) symbolP; | |
158 | #endif | |
159 | S_SET_NAME (symbolP, preserved_copy_of_name); | |
160 | ||
161 | S_SET_SEGMENT (symbolP, segment); | |
162 | S_SET_VALUE (symbolP, valu); | |
163 | symbol_clear_list_pointers (symbolP); | |
164 | ||
165 | symbolP->sy_frag = frag; | |
166 | #ifndef BFD_ASSEMBLER | |
167 | symbolP->sy_number = ~0; | |
168 | symbolP->sy_name_offset = (unsigned int) ~0; | |
169 | #endif | |
170 | ||
171 | obj_symbol_new_hook (symbolP); | |
172 | ||
173 | #ifdef tc_symbol_new_hook | |
174 | tc_symbol_new_hook (symbolP); | |
175 | #endif | |
176 | ||
177 | return symbolP; | |
178 | } | |
179 | \f | |
49309057 ILT |
180 | #ifdef BFD_ASSEMBLER |
181 | ||
182 | /* Local symbol support. If we can get away with it, we keep only a | |
183 | small amount of information for local symbols. */ | |
184 | ||
49309057 ILT |
185 | static symbolS *local_symbol_convert PARAMS ((struct local_symbol *)); |
186 | ||
187 | /* Used for statistics. */ | |
188 | ||
189 | static unsigned long local_symbol_count; | |
190 | static unsigned long local_symbol_conversion_count; | |
191 | ||
192 | /* This macro is called with a symbol argument passed by reference. | |
193 | It returns whether this is a local symbol. If necessary, it | |
194 | changes its argument to the real symbol. */ | |
195 | ||
196 | #define LOCAL_SYMBOL_CHECK(s) \ | |
197 | (s->bsym == NULL \ | |
198 | ? (local_symbol_converted_p ((struct local_symbol *) s) \ | |
199 | ? (s = local_symbol_get_real_symbol ((struct local_symbol *) s), \ | |
200 | 0) \ | |
201 | : 1) \ | |
202 | : 0) | |
203 | ||
204 | /* Create a local symbol and insert it into the local hash table. */ | |
205 | ||
54cfded0 | 206 | struct local_symbol * |
bd780143 | 207 | local_symbol_make (name, section, value, frag) |
49309057 ILT |
208 | const char *name; |
209 | segT section; | |
bd780143 | 210 | valueT value; |
49309057 ILT |
211 | fragS *frag; |
212 | { | |
213 | char *name_copy; | |
214 | struct local_symbol *ret; | |
215 | ||
216 | ++local_symbol_count; | |
217 | ||
218 | name_copy = save_symbol_name (name); | |
219 | ||
220 | ret = (struct local_symbol *) obstack_alloc (¬es, sizeof *ret); | |
221 | ret->lsy_marker = NULL; | |
222 | ret->lsy_name = name_copy; | |
223 | ret->lsy_section = section; | |
224 | local_symbol_set_frag (ret, frag); | |
bd780143 | 225 | ret->lsy_value = value; |
49309057 ILT |
226 | |
227 | hash_jam (local_hash, name_copy, (PTR) ret); | |
228 | ||
229 | return ret; | |
230 | } | |
231 | ||
232 | /* Convert a local symbol into a real symbol. Note that we do not | |
233 | reclaim the space used by the local symbol. */ | |
234 | ||
235 | static symbolS * | |
236 | local_symbol_convert (locsym) | |
237 | struct local_symbol *locsym; | |
238 | { | |
239 | symbolS *ret; | |
240 | ||
241 | assert (locsym->lsy_marker == NULL); | |
242 | if (local_symbol_converted_p (locsym)) | |
243 | return local_symbol_get_real_symbol (locsym); | |
244 | ||
245 | ++local_symbol_conversion_count; | |
246 | ||
bd780143 | 247 | ret = symbol_new (locsym->lsy_name, locsym->lsy_section, locsym->lsy_value, |
49309057 ILT |
248 | local_symbol_get_frag (locsym)); |
249 | ||
250 | if (local_symbol_resolved_p (locsym)) | |
251 | ret->sy_resolved = 1; | |
252 | ||
253 | /* Local symbols are always either defined or used. */ | |
254 | ret->sy_used = 1; | |
255 | ||
8c5e1ccd AO |
256 | #ifdef TC_LOCAL_SYMFIELD_CONVERT |
257 | TC_LOCAL_SYMFIELD_CONVERT (locsym, ret); | |
258 | #endif | |
259 | ||
49309057 ILT |
260 | symbol_table_insert (ret); |
261 | ||
262 | local_symbol_mark_converted (locsym); | |
263 | local_symbol_set_real_symbol (locsym, ret); | |
264 | ||
265 | hash_jam (local_hash, locsym->lsy_name, NULL); | |
266 | ||
267 | return ret; | |
268 | } | |
269 | ||
270 | #else /* ! BFD_ASSEMBLER */ | |
271 | ||
272 | #define LOCAL_SYMBOL_CHECK(s) 0 | |
273 | #define local_symbol_convert(s) ((symbolS *) s) | |
274 | ||
275 | #endif /* ! BFD_ASSEMBLER */ | |
276 | \f | |
7c743825 KH |
277 | /* We have just seen "<name>:". |
278 | Creates a struct symbol unless it already exists. | |
279 | ||
280 | Gripes if we are redefining a symbol incompatibly (and ignores it). */ | |
252b5132 | 281 | |
252b5132 | 282 | symbolS * |
7c743825 KH |
283 | colon (sym_name) /* Just seen "x:" - rattle symbols & frags. */ |
284 | const char *sym_name; /* Symbol name, as a cannonical string. */ | |
285 | /* We copy this string: OK to alter later. */ | |
252b5132 | 286 | { |
7c743825 | 287 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 | 288 | |
7cf10893 | 289 | /* Sun local labels go out of scope whenever a non-local symbol is |
252b5132 RH |
290 | defined. */ |
291 | if (LOCAL_LABELS_DOLLAR) | |
292 | { | |
293 | int local; | |
294 | ||
295 | #ifdef BFD_ASSEMBLER | |
296 | local = bfd_is_local_label_name (stdoutput, sym_name); | |
297 | #else | |
298 | local = LOCAL_LABEL (sym_name); | |
299 | #endif | |
300 | ||
301 | if (! local) | |
302 | dollar_label_clear (); | |
303 | } | |
304 | ||
305 | #ifndef WORKING_DOT_WORD | |
306 | if (new_broken_words) | |
307 | { | |
308 | struct broken_word *a; | |
309 | int possible_bytes; | |
310 | fragS *frag_tmp; | |
311 | char *frag_opcode; | |
312 | ||
313 | extern const int md_short_jump_size; | |
314 | extern const int md_long_jump_size; | |
7cf10893 NC |
315 | |
316 | if (now_seg == absolute_section) | |
317 | { | |
318 | as_bad (_("cannot define symbol `%s' in absolute section"), sym_name); | |
319 | return NULL; | |
320 | } | |
1d3b2b27 | 321 | |
252b5132 RH |
322 | possible_bytes = (md_short_jump_size |
323 | + new_broken_words * md_long_jump_size); | |
324 | ||
325 | frag_tmp = frag_now; | |
326 | frag_opcode = frag_var (rs_broken_word, | |
327 | possible_bytes, | |
328 | possible_bytes, | |
329 | (relax_substateT) 0, | |
330 | (symbolS *) broken_words, | |
331 | (offsetT) 0, | |
332 | NULL); | |
333 | ||
7c743825 KH |
334 | /* We want to store the pointer to where to insert the jump |
335 | table in the fr_opcode of the rs_broken_word frag. This | |
336 | requires a little hackery. */ | |
252b5132 RH |
337 | while (frag_tmp |
338 | && (frag_tmp->fr_type != rs_broken_word | |
339 | || frag_tmp->fr_opcode)) | |
340 | frag_tmp = frag_tmp->fr_next; | |
341 | know (frag_tmp); | |
342 | frag_tmp->fr_opcode = frag_opcode; | |
343 | new_broken_words = 0; | |
344 | ||
345 | for (a = broken_words; a && a->dispfrag == 0; a = a->next_broken_word) | |
346 | a->dispfrag = frag_tmp; | |
347 | } | |
348 | #endif /* WORKING_DOT_WORD */ | |
349 | ||
350 | if ((symbolP = symbol_find (sym_name)) != 0) | |
351 | { | |
352 | #ifdef RESOLVE_SYMBOL_REDEFINITION | |
353 | if (RESOLVE_SYMBOL_REDEFINITION (symbolP)) | |
354 | return symbolP; | |
355 | #endif | |
7c743825 | 356 | /* Now check for undefined symbols. */ |
49309057 ILT |
357 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
358 | { | |
a1605869 | 359 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
360 | struct local_symbol *locsym = (struct local_symbol *) symbolP; |
361 | ||
362 | if (locsym->lsy_section != undefined_section | |
363 | && (local_symbol_get_frag (locsym) != frag_now | |
364 | || locsym->lsy_section != now_seg | |
bd780143 | 365 | || locsym->lsy_value != frag_now_fix ())) |
49309057 | 366 | { |
0e389e77 | 367 | as_bad (_("symbol `%s' is already defined"), sym_name); |
49309057 ILT |
368 | return symbolP; |
369 | } | |
370 | ||
371 | locsym->lsy_section = now_seg; | |
372 | local_symbol_set_frag (locsym, frag_now); | |
bd780143 | 373 | locsym->lsy_value = frag_now_fix (); |
a1605869 | 374 | #endif |
49309057 ILT |
375 | } |
376 | else if (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
252b5132 RH |
377 | { |
378 | if (S_GET_VALUE (symbolP) == 0) | |
379 | { | |
380 | symbolP->sy_frag = frag_now; | |
381 | #ifdef OBJ_VMS | |
7c743825 | 382 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
383 | #endif |
384 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
385 | S_SET_SEGMENT (symbolP, now_seg); | |
386 | #ifdef N_UNDF | |
387 | know (N_UNDF == 0); | |
7c743825 | 388 | #endif /* if we have one, it better be zero. */ |
252b5132 RH |
389 | |
390 | } | |
391 | else | |
392 | { | |
7c743825 KH |
393 | /* There are still several cases to check: |
394 | ||
395 | A .comm/.lcomm symbol being redefined as initialized | |
396 | data is OK | |
397 | ||
398 | A .comm/.lcomm symbol being redefined with a larger | |
399 | size is also OK | |
400 | ||
401 | This only used to be allowed on VMS gas, but Sun cc | |
402 | on the sparc also depends on it. */ | |
252b5132 RH |
403 | |
404 | if (((!S_IS_DEBUG (symbolP) | |
405 | && (!S_IS_DEFINED (symbolP) || S_IS_COMMON (symbolP)) | |
406 | && S_IS_EXTERNAL (symbolP)) | |
407 | || S_GET_SEGMENT (symbolP) == bss_section) | |
408 | && (now_seg == data_section | |
409 | || now_seg == S_GET_SEGMENT (symbolP))) | |
410 | { | |
7c743825 | 411 | /* Select which of the 2 cases this is. */ |
252b5132 RH |
412 | if (now_seg != data_section) |
413 | { | |
7c743825 KH |
414 | /* New .comm for prev .comm symbol. |
415 | ||
416 | If the new size is larger we just change its | |
417 | value. If the new size is smaller, we ignore | |
418 | this symbol. */ | |
252b5132 RH |
419 | if (S_GET_VALUE (symbolP) |
420 | < ((unsigned) frag_now_fix ())) | |
421 | { | |
422 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
423 | } | |
424 | } | |
425 | else | |
426 | { | |
427 | /* It is a .comm/.lcomm being converted to initialized | |
428 | data. */ | |
429 | symbolP->sy_frag = frag_now; | |
430 | #ifdef OBJ_VMS | |
7c743825 | 431 | S_SET_OTHER (symbolP, const_flag); |
252b5132 RH |
432 | #endif |
433 | S_SET_VALUE (symbolP, (valueT) frag_now_fix ()); | |
7c743825 | 434 | S_SET_SEGMENT (symbolP, now_seg); /* Keep N_EXT bit. */ |
252b5132 RH |
435 | } |
436 | } | |
437 | else | |
438 | { | |
4c63da97 AM |
439 | #if (!defined (OBJ_AOUT) && !defined (OBJ_MAYBE_AOUT) \ |
440 | && !defined (OBJ_BOUT) && !defined (OBJ_MAYBE_BOUT)) | |
441 | static const char *od_buf = ""; | |
252b5132 | 442 | #else |
4c63da97 AM |
443 | char od_buf[100]; |
444 | od_buf[0] = '\0'; | |
445 | #ifdef BFD_ASSEMBLER | |
446 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
447 | #endif | |
d1a6c242 KH |
448 | sprintf (od_buf, "%d.%d.", |
449 | S_GET_OTHER (symbolP), | |
450 | S_GET_DESC (symbolP)); | |
4c63da97 | 451 | #endif |
0e389e77 | 452 | as_bad (_("symbol `%s' is already defined as \"%s\"/%s%ld"), |
252b5132 RH |
453 | sym_name, |
454 | segment_name (S_GET_SEGMENT (symbolP)), | |
4c63da97 | 455 | od_buf, |
252b5132 | 456 | (long) S_GET_VALUE (symbolP)); |
252b5132 | 457 | } |
7c743825 | 458 | } /* if the undefined symbol has no value */ |
252b5132 RH |
459 | } |
460 | else | |
461 | { | |
7c743825 | 462 | /* Don't blow up if the definition is the same. */ |
252b5132 RH |
463 | if (!(frag_now == symbolP->sy_frag |
464 | && S_GET_VALUE (symbolP) == frag_now_fix () | |
465 | && S_GET_SEGMENT (symbolP) == now_seg)) | |
0e389e77 | 466 | as_bad (_("symbol `%s' is already defined"), sym_name); |
d4887adc | 467 | } |
252b5132 RH |
468 | |
469 | } | |
49309057 ILT |
470 | #ifdef BFD_ASSEMBLER |
471 | else if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, sym_name)) | |
472 | { | |
473 | symbolP = (symbolS *) local_symbol_make (sym_name, now_seg, | |
474 | (valueT) frag_now_fix (), | |
475 | frag_now); | |
476 | } | |
477 | #endif /* BFD_ASSEMBLER */ | |
252b5132 RH |
478 | else |
479 | { | |
480 | symbolP = symbol_new (sym_name, now_seg, (valueT) frag_now_fix (), | |
481 | frag_now); | |
482 | #ifdef OBJ_VMS | |
483 | S_SET_OTHER (symbolP, const_flag); | |
484 | #endif /* OBJ_VMS */ | |
485 | ||
486 | symbol_table_insert (symbolP); | |
d4887adc | 487 | } |
252b5132 RH |
488 | |
489 | if (mri_common_symbol != NULL) | |
490 | { | |
491 | /* This symbol is actually being defined within an MRI common | |
1d3b2b27 | 492 | section. This requires special handling. */ |
49309057 ILT |
493 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
494 | symbolP = local_symbol_convert ((struct local_symbol *) symbolP); | |
252b5132 RH |
495 | symbolP->sy_value.X_op = O_symbol; |
496 | symbolP->sy_value.X_add_symbol = mri_common_symbol; | |
497 | symbolP->sy_value.X_add_number = S_GET_VALUE (mri_common_symbol); | |
498 | symbolP->sy_frag = &zero_address_frag; | |
499 | S_SET_SEGMENT (symbolP, expr_section); | |
500 | symbolP->sy_mri_common = 1; | |
501 | } | |
502 | ||
503 | #ifdef tc_frob_label | |
504 | tc_frob_label (symbolP); | |
505 | #endif | |
506 | #ifdef obj_frob_label | |
507 | obj_frob_label (symbolP); | |
508 | #endif | |
509 | ||
510 | return symbolP; | |
511 | } | |
512 | \f | |
7c743825 | 513 | /* Die if we can't insert the symbol. */ |
252b5132 | 514 | |
7c743825 | 515 | void |
252b5132 RH |
516 | symbol_table_insert (symbolP) |
517 | symbolS *symbolP; | |
518 | { | |
519 | register const char *error_string; | |
520 | ||
521 | know (symbolP); | |
522 | know (S_GET_NAME (symbolP)); | |
523 | ||
49309057 ILT |
524 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
525 | { | |
526 | error_string = hash_jam (local_hash, S_GET_NAME (symbolP), | |
527 | (PTR) symbolP); | |
528 | if (error_string != NULL) | |
0e389e77 | 529 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
49309057 ILT |
530 | S_GET_NAME (symbolP), error_string); |
531 | return; | |
532 | } | |
533 | ||
252b5132 RH |
534 | if ((error_string = hash_jam (sy_hash, S_GET_NAME (symbolP), (PTR) symbolP))) |
535 | { | |
0e389e77 | 536 | as_fatal (_("inserting \"%s\" into symbol table failed: %s"), |
252b5132 | 537 | S_GET_NAME (symbolP), error_string); |
7c743825 KH |
538 | } /* on error */ |
539 | } | |
252b5132 | 540 | \f |
7c743825 KH |
541 | /* If a symbol name does not exist, create it as undefined, and insert |
542 | it into the symbol table. Return a pointer to it. */ | |
543 | ||
252b5132 RH |
544 | symbolS * |
545 | symbol_find_or_make (name) | |
546 | const char *name; | |
547 | { | |
548 | register symbolS *symbolP; | |
549 | ||
550 | symbolP = symbol_find (name); | |
551 | ||
552 | if (symbolP == NULL) | |
553 | { | |
49309057 ILT |
554 | #ifdef BFD_ASSEMBLER |
555 | if (! flag_keep_locals && bfd_is_local_label_name (stdoutput, name)) | |
556 | { | |
557 | symbolP = md_undefined_symbol ((char *) name); | |
558 | if (symbolP != NULL) | |
559 | return symbolP; | |
560 | ||
561 | symbolP = (symbolS *) local_symbol_make (name, undefined_section, | |
562 | (valueT) 0, | |
563 | &zero_address_frag); | |
564 | return symbolP; | |
565 | } | |
566 | #endif | |
567 | ||
252b5132 RH |
568 | symbolP = symbol_make (name); |
569 | ||
570 | symbol_table_insert (symbolP); | |
571 | } /* if symbol wasn't found */ | |
572 | ||
573 | return (symbolP); | |
7c743825 | 574 | } |
252b5132 RH |
575 | |
576 | symbolS * | |
577 | symbol_make (name) | |
9758f3fc | 578 | const char *name; |
252b5132 RH |
579 | { |
580 | symbolS *symbolP; | |
581 | ||
7c743825 | 582 | /* Let the machine description default it, e.g. for register names. */ |
252b5132 RH |
583 | symbolP = md_undefined_symbol ((char *) name); |
584 | ||
585 | if (!symbolP) | |
586 | symbolP = symbol_new (name, undefined_section, (valueT) 0, &zero_address_frag); | |
587 | ||
588 | return (symbolP); | |
7c743825 | 589 | } |
252b5132 | 590 | |
b7d6ed97 RH |
591 | symbolS * |
592 | symbol_temp_new (seg, ofs, frag) | |
593 | segT seg; | |
594 | valueT ofs; | |
595 | fragS *frag; | |
596 | { | |
756d1d01 | 597 | return symbol_new (FAKE_LABEL_NAME, seg, ofs, frag); |
b7d6ed97 RH |
598 | } |
599 | ||
600 | symbolS * | |
601 | symbol_temp_new_now () | |
602 | { | |
603 | return symbol_temp_new (now_seg, frag_now_fix (), frag_now); | |
604 | } | |
605 | ||
606 | symbolS * | |
607 | symbol_temp_make () | |
608 | { | |
756d1d01 | 609 | return symbol_make (FAKE_LABEL_NAME); |
b7d6ed97 RH |
610 | } |
611 | ||
7c743825 KH |
612 | /* Implement symbol table lookup. |
613 | In: A symbol's name as a string: '\0' can't be part of a symbol name. | |
614 | Out: NULL if the name was not in the symbol table, else the address | |
615 | of a struct symbol associated with that name. */ | |
252b5132 RH |
616 | |
617 | symbolS * | |
618 | symbol_find (name) | |
9758f3fc | 619 | const char *name; |
252b5132 RH |
620 | { |
621 | #ifdef STRIP_UNDERSCORE | |
622 | return (symbol_find_base (name, 1)); | |
623 | #else /* STRIP_UNDERSCORE */ | |
624 | return (symbol_find_base (name, 0)); | |
625 | #endif /* STRIP_UNDERSCORE */ | |
7c743825 | 626 | } |
252b5132 | 627 | |
9758f3fc AM |
628 | symbolS * |
629 | symbol_find_exact (name) | |
630 | const char *name; | |
631 | { | |
632 | #ifdef BFD_ASSEMBLER | |
633 | { | |
634 | struct local_symbol *locsym; | |
635 | ||
636 | locsym = (struct local_symbol *) hash_find (local_hash, name); | |
637 | if (locsym != NULL) | |
638 | return (symbolS *) locsym; | |
639 | } | |
640 | #endif | |
641 | ||
642 | return ((symbolS *) hash_find (sy_hash, name)); | |
643 | } | |
644 | ||
252b5132 RH |
645 | symbolS * |
646 | symbol_find_base (name, strip_underscore) | |
9758f3fc | 647 | const char *name; |
252b5132 RH |
648 | int strip_underscore; |
649 | { | |
650 | if (strip_underscore && *name == '_') | |
651 | name++; | |
652 | ||
653 | #ifdef tc_canonicalize_symbol_name | |
654 | { | |
655 | char *copy; | |
03987ced | 656 | size_t len = strlen (name) + 1; |
252b5132 | 657 | |
03987ced RH |
658 | copy = (char *) alloca (len); |
659 | memcpy (copy, name, len); | |
252b5132 RH |
660 | name = tc_canonicalize_symbol_name (copy); |
661 | } | |
662 | #endif | |
663 | ||
664 | if (! symbols_case_sensitive) | |
665 | { | |
03987ced RH |
666 | char *copy; |
667 | const char *orig; | |
668 | unsigned char c; | |
669 | ||
670 | orig = name; | |
671 | name = copy = (char *) alloca (strlen (name) + 1); | |
672 | ||
673 | while ((c = *orig++) != '\0') | |
674 | { | |
3882b010 | 675 | *copy++ = TOUPPER (c); |
03987ced RH |
676 | } |
677 | *copy = '\0'; | |
252b5132 RH |
678 | } |
679 | ||
9758f3fc | 680 | return symbol_find_exact (name); |
252b5132 RH |
681 | } |
682 | ||
7c743825 KH |
683 | /* Once upon a time, symbols were kept in a singly linked list. At |
684 | least coff needs to be able to rearrange them from time to time, for | |
685 | which a doubly linked list is much more convenient. Loic did these | |
686 | as macros which seemed dangerous to me so they're now functions. | |
687 | xoxorich. */ | |
688 | ||
689 | /* Link symbol ADDME after symbol TARGET in the chain. */ | |
252b5132 | 690 | |
7c743825 | 691 | void |
252b5132 RH |
692 | symbol_append (addme, target, rootPP, lastPP) |
693 | symbolS *addme; | |
694 | symbolS *target; | |
695 | symbolS **rootPP; | |
696 | symbolS **lastPP; | |
697 | { | |
49309057 ILT |
698 | if (LOCAL_SYMBOL_CHECK (addme)) |
699 | abort (); | |
700 | if (target != NULL && LOCAL_SYMBOL_CHECK (target)) | |
701 | abort (); | |
702 | ||
252b5132 RH |
703 | if (target == NULL) |
704 | { | |
705 | know (*rootPP == NULL); | |
706 | know (*lastPP == NULL); | |
707 | addme->sy_next = NULL; | |
708 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
709 | addme->sy_previous = NULL; | |
710 | #endif | |
711 | *rootPP = addme; | |
712 | *lastPP = addme; | |
713 | return; | |
7c743825 | 714 | } /* if the list is empty */ |
252b5132 RH |
715 | |
716 | if (target->sy_next != NULL) | |
717 | { | |
718 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
719 | target->sy_next->sy_previous = addme; | |
720 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
721 | } | |
722 | else | |
723 | { | |
724 | know (*lastPP == target); | |
725 | *lastPP = addme; | |
7c743825 | 726 | } /* if we have a next */ |
252b5132 RH |
727 | |
728 | addme->sy_next = target->sy_next; | |
729 | target->sy_next = addme; | |
730 | ||
731 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
732 | addme->sy_previous = target; | |
733 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
734 | ||
735 | debug_verify_symchain (symbol_rootP, symbol_lastP); | |
736 | } | |
737 | ||
7c743825 KH |
738 | /* Set the chain pointers of SYMBOL to null. */ |
739 | ||
740 | void | |
252b5132 RH |
741 | symbol_clear_list_pointers (symbolP) |
742 | symbolS *symbolP; | |
743 | { | |
49309057 ILT |
744 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
745 | abort (); | |
252b5132 RH |
746 | symbolP->sy_next = NULL; |
747 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
748 | symbolP->sy_previous = NULL; | |
749 | #endif | |
750 | } | |
751 | ||
752 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
7c743825 KH |
753 | /* Remove SYMBOLP from the list. */ |
754 | ||
755 | void | |
252b5132 RH |
756 | symbol_remove (symbolP, rootPP, lastPP) |
757 | symbolS *symbolP; | |
758 | symbolS **rootPP; | |
759 | symbolS **lastPP; | |
760 | { | |
49309057 ILT |
761 | if (LOCAL_SYMBOL_CHECK (symbolP)) |
762 | abort (); | |
763 | ||
252b5132 RH |
764 | if (symbolP == *rootPP) |
765 | { | |
766 | *rootPP = symbolP->sy_next; | |
7c743825 | 767 | } /* if it was the root */ |
252b5132 RH |
768 | |
769 | if (symbolP == *lastPP) | |
770 | { | |
771 | *lastPP = symbolP->sy_previous; | |
7c743825 | 772 | } /* if it was the tail */ |
252b5132 RH |
773 | |
774 | if (symbolP->sy_next != NULL) | |
775 | { | |
776 | symbolP->sy_next->sy_previous = symbolP->sy_previous; | |
7c743825 | 777 | } /* if not last */ |
252b5132 RH |
778 | |
779 | if (symbolP->sy_previous != NULL) | |
780 | { | |
781 | symbolP->sy_previous->sy_next = symbolP->sy_next; | |
7c743825 | 782 | } /* if not first */ |
252b5132 RH |
783 | |
784 | debug_verify_symchain (*rootPP, *lastPP); | |
785 | } | |
786 | ||
7c743825 KH |
787 | /* Link symbol ADDME before symbol TARGET in the chain. */ |
788 | ||
789 | void | |
252b5132 RH |
790 | symbol_insert (addme, target, rootPP, lastPP) |
791 | symbolS *addme; | |
792 | symbolS *target; | |
793 | symbolS **rootPP; | |
ab9da554 | 794 | symbolS **lastPP ATTRIBUTE_UNUSED; |
252b5132 | 795 | { |
49309057 ILT |
796 | if (LOCAL_SYMBOL_CHECK (addme)) |
797 | abort (); | |
798 | if (LOCAL_SYMBOL_CHECK (target)) | |
799 | abort (); | |
800 | ||
252b5132 RH |
801 | if (target->sy_previous != NULL) |
802 | { | |
803 | target->sy_previous->sy_next = addme; | |
804 | } | |
805 | else | |
806 | { | |
807 | know (*rootPP == target); | |
808 | *rootPP = addme; | |
7c743825 | 809 | } /* if not first */ |
252b5132 RH |
810 | |
811 | addme->sy_previous = target->sy_previous; | |
812 | target->sy_previous = addme; | |
813 | addme->sy_next = target; | |
814 | ||
815 | debug_verify_symchain (*rootPP, *lastPP); | |
816 | } | |
817 | ||
818 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
819 | ||
7c743825 | 820 | void |
252b5132 RH |
821 | verify_symbol_chain (rootP, lastP) |
822 | symbolS *rootP; | |
823 | symbolS *lastP; | |
824 | { | |
825 | symbolS *symbolP = rootP; | |
826 | ||
827 | if (symbolP == NULL) | |
828 | return; | |
829 | ||
830 | for (; symbol_next (symbolP) != NULL; symbolP = symbol_next (symbolP)) | |
831 | { | |
49309057 ILT |
832 | #ifdef BFD_ASSEMBLER |
833 | assert (symbolP->bsym != NULL); | |
834 | #endif | |
252b5132 RH |
835 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
836 | assert (symbolP->sy_next->sy_previous == symbolP); | |
837 | #else | |
838 | /* Walk the list anyways, to make sure pointers are still good. */ | |
839 | ; | |
840 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
841 | } | |
842 | ||
843 | assert (lastP == symbolP); | |
844 | } | |
845 | ||
846 | void | |
847 | verify_symbol_chain_2 (sym) | |
848 | symbolS *sym; | |
849 | { | |
850 | symbolS *p = sym, *n = sym; | |
851 | #ifdef SYMBOLS_NEED_BACKPOINTERS | |
852 | while (symbol_previous (p)) | |
853 | p = symbol_previous (p); | |
854 | #endif | |
855 | while (symbol_next (n)) | |
856 | n = symbol_next (n); | |
857 | verify_symbol_chain (p, n); | |
858 | } | |
859 | ||
0909233e AM |
860 | static void |
861 | report_op_error (symp, left, right) | |
862 | symbolS *symp; | |
863 | symbolS *left, *right; | |
864 | { | |
865 | char *file; | |
866 | unsigned int line; | |
867 | segT seg_left = S_GET_SEGMENT (left); | |
868 | segT seg_right = right ? S_GET_SEGMENT (right) : 0; | |
1d3b2b27 | 869 | |
0909233e AM |
870 | if (expr_symbol_where (symp, &file, &line)) |
871 | { | |
872 | if (seg_left == undefined_section) | |
873 | as_bad_where (file, line, | |
874 | _("undefined symbol `%s' in operation"), | |
875 | S_GET_NAME (left)); | |
876 | if (seg_right == undefined_section) | |
877 | as_bad_where (file, line, | |
878 | _("undefined symbol `%s' in operation"), | |
879 | S_GET_NAME (right)); | |
880 | if (seg_left != undefined_section | |
881 | && seg_right != undefined_section) | |
882 | { | |
883 | if (right) | |
884 | as_bad_where (file, line, | |
885 | _("invalid sections for operation on `%s' and `%s'"), | |
886 | S_GET_NAME (left), S_GET_NAME (right)); | |
887 | else | |
888 | as_bad_where (file, line, | |
889 | _("invalid section for operation on `%s'"), | |
890 | S_GET_NAME (left)); | |
891 | } | |
1d3b2b27 | 892 | |
0909233e AM |
893 | } |
894 | else | |
895 | { | |
896 | if (seg_left == undefined_section) | |
897 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
898 | S_GET_NAME (left), S_GET_NAME (symp)); | |
899 | if (seg_right == undefined_section) | |
900 | as_bad (_("undefined symbol `%s' in operation setting `%s'"), | |
901 | S_GET_NAME (right), S_GET_NAME (symp)); | |
902 | if (seg_left != undefined_section | |
903 | && seg_right != undefined_section) | |
904 | { | |
905 | if (right) | |
906 | as_bad_where (file, line, | |
907 | _("invalid sections for operation on `%s' and `%s' setting `%s'"), | |
908 | S_GET_NAME (left), S_GET_NAME (right), S_GET_NAME (symp)); | |
909 | else | |
910 | as_bad_where (file, line, | |
911 | _("invalid section for operation on `%s' setting `%s'"), | |
912 | S_GET_NAME (left), S_GET_NAME (symp)); | |
913 | } | |
914 | } | |
915 | } | |
916 | ||
252b5132 RH |
917 | /* Resolve the value of a symbol. This is called during the final |
918 | pass over the symbol table to resolve any symbols with complex | |
919 | values. */ | |
920 | ||
921 | valueT | |
6386f3a7 | 922 | resolve_symbol_value (symp) |
252b5132 | 923 | symbolS *symp; |
252b5132 RH |
924 | { |
925 | int resolved; | |
03e83a45 | 926 | valueT final_val = 0; |
252b5132 RH |
927 | segT final_seg; |
928 | ||
a1605869 | 929 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
930 | if (LOCAL_SYMBOL_CHECK (symp)) |
931 | { | |
932 | struct local_symbol *locsym = (struct local_symbol *) symp; | |
933 | ||
bd780143 | 934 | final_val = locsym->lsy_value; |
49309057 | 935 | if (local_symbol_resolved_p (locsym)) |
bd780143 | 936 | return final_val; |
49309057 | 937 | |
bd780143 | 938 | final_val += local_symbol_get_frag (locsym)->fr_address / OCTETS_PER_BYTE; |
49309057 | 939 | |
6386f3a7 | 940 | if (finalize_syms) |
49309057 | 941 | { |
bd780143 | 942 | locsym->lsy_value = final_val; |
49309057 ILT |
943 | local_symbol_mark_resolved (locsym); |
944 | } | |
945 | ||
946 | return final_val; | |
947 | } | |
a1605869 | 948 | #endif |
49309057 | 949 | |
252b5132 RH |
950 | if (symp->sy_resolved) |
951 | { | |
952 | if (symp->sy_value.X_op == O_constant) | |
953 | return (valueT) symp->sy_value.X_add_number; | |
954 | else | |
955 | return 0; | |
956 | } | |
957 | ||
958 | resolved = 0; | |
959 | final_seg = S_GET_SEGMENT (symp); | |
960 | ||
961 | if (symp->sy_resolving) | |
962 | { | |
6386f3a7 | 963 | if (finalize_syms) |
0e389e77 | 964 | as_bad (_("symbol definition loop encountered at `%s'"), |
7c743825 | 965 | S_GET_NAME (symp)); |
252b5132 RH |
966 | final_val = 0; |
967 | resolved = 1; | |
968 | } | |
969 | else | |
970 | { | |
971 | symbolS *add_symbol, *op_symbol; | |
972 | offsetT left, right; | |
973 | segT seg_left, seg_right; | |
974 | operatorT op; | |
975 | ||
976 | symp->sy_resolving = 1; | |
977 | ||
978 | /* Help out with CSE. */ | |
979 | add_symbol = symp->sy_value.X_add_symbol; | |
980 | op_symbol = symp->sy_value.X_op_symbol; | |
981 | final_val = symp->sy_value.X_add_number; | |
982 | op = symp->sy_value.X_op; | |
983 | ||
984 | switch (op) | |
985 | { | |
986 | default: | |
987 | BAD_CASE (op); | |
988 | break; | |
989 | ||
990 | case O_absent: | |
991 | final_val = 0; | |
992 | /* Fall through. */ | |
993 | ||
994 | case O_constant: | |
bea9907b | 995 | final_val += symp->sy_frag->fr_address / OCTETS_PER_BYTE; |
252b5132 RH |
996 | if (final_seg == expr_section) |
997 | final_seg = absolute_section; | |
998 | resolved = 1; | |
999 | break; | |
1000 | ||
1001 | case O_symbol: | |
1002 | case O_symbol_rva: | |
6386f3a7 | 1003 | left = resolve_symbol_value (add_symbol); |
e0890092 AM |
1004 | seg_left = S_GET_SEGMENT (add_symbol); |
1005 | if (finalize_syms) | |
1006 | symp->sy_value.X_op_symbol = NULL; | |
252b5132 | 1007 | |
e0890092 | 1008 | do_symbol: |
252b5132 RH |
1009 | if (symp->sy_mri_common) |
1010 | { | |
1011 | /* This is a symbol inside an MRI common section. The | |
e0890092 AM |
1012 | relocation routines are going to handle it specially. |
1013 | Don't change the value. */ | |
49309057 | 1014 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1015 | break; |
1016 | } | |
1017 | ||
6386f3a7 | 1018 | if (finalize_syms && final_val == 0) |
49309057 ILT |
1019 | { |
1020 | if (LOCAL_SYMBOL_CHECK (add_symbol)) | |
1021 | add_symbol = local_symbol_convert ((struct local_symbol *) | |
1022 | add_symbol); | |
1023 | copy_symbol_attributes (symp, add_symbol); | |
1024 | } | |
252b5132 | 1025 | |
e0890092 AM |
1026 | /* If we have equated this symbol to an undefined or common |
1027 | symbol, keep X_op set to O_symbol, and don't change | |
1028 | X_add_number. This permits the routine which writes out | |
1029 | relocation to detect this case, and convert the | |
1030 | relocation to be against the symbol to which this symbol | |
1031 | is equated. */ | |
252b5132 RH |
1032 | if (! S_IS_DEFINED (add_symbol) || S_IS_COMMON (add_symbol)) |
1033 | { | |
6386f3a7 | 1034 | if (finalize_syms) |
252b5132 | 1035 | { |
252b5132 RH |
1036 | symp->sy_value.X_op = O_symbol; |
1037 | symp->sy_value.X_add_symbol = add_symbol; | |
1038 | symp->sy_value.X_add_number = final_val; | |
e0890092 AM |
1039 | /* Use X_op_symbol as a flag. */ |
1040 | symp->sy_value.X_op_symbol = add_symbol; | |
1041 | final_seg = seg_left; | |
252b5132 RH |
1042 | } |
1043 | final_val = 0; | |
49309057 | 1044 | resolved = symbol_resolved_p (add_symbol); |
c89c8534 | 1045 | symp->sy_resolving = 0; |
252b5132 RH |
1046 | goto exit_dont_set_value; |
1047 | } | |
e0890092 AM |
1048 | else if (finalize_syms && final_seg == expr_section |
1049 | && seg_left != expr_section) | |
1050 | { | |
1051 | /* If the symbol is an expression symbol, do similarly | |
1052 | as for undefined and common syms above. Handles | |
1053 | "sym +/- expr" where "expr" cannot be evaluated | |
1054 | immediately, and we want relocations to be against | |
1055 | "sym", eg. because it is weak. */ | |
1056 | symp->sy_value.X_op = O_symbol; | |
1057 | symp->sy_value.X_add_symbol = add_symbol; | |
1058 | symp->sy_value.X_add_number = final_val; | |
1059 | symp->sy_value.X_op_symbol = add_symbol; | |
1060 | final_seg = seg_left; | |
1061 | final_val += symp->sy_frag->fr_address + left; | |
1062 | resolved = symbol_resolved_p (add_symbol); | |
1063 | symp->sy_resolving = 0; | |
1064 | goto exit_dont_set_value; | |
1065 | } | |
252b5132 RH |
1066 | else |
1067 | { | |
1068 | final_val += symp->sy_frag->fr_address + left; | |
1069 | if (final_seg == expr_section || final_seg == undefined_section) | |
e0890092 | 1070 | final_seg = seg_left; |
252b5132 RH |
1071 | } |
1072 | ||
49309057 | 1073 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1074 | break; |
1075 | ||
1076 | case O_uminus: | |
1077 | case O_bit_not: | |
1078 | case O_logical_not: | |
6386f3a7 | 1079 | left = resolve_symbol_value (add_symbol); |
784b640d | 1080 | seg_left = S_GET_SEGMENT (add_symbol); |
252b5132 | 1081 | |
0909233e AM |
1082 | /* By reducing these to the relevant dyadic operator, we get |
1083 | !S -> S == 0 permitted on anything, | |
1084 | -S -> 0 - S only permitted on absolute | |
1085 | ~S -> S ^ ~0 only permitted on absolute */ | |
1086 | if (op != O_logical_not && seg_left != absolute_section | |
1087 | && finalize_syms) | |
1088 | report_op_error (symp, add_symbol, NULL); | |
1d3b2b27 | 1089 | |
0909233e AM |
1090 | if (final_seg == expr_section || final_seg == undefined_section) |
1091 | final_seg = absolute_section; | |
1d3b2b27 | 1092 | |
252b5132 RH |
1093 | if (op == O_uminus) |
1094 | left = -left; | |
1095 | else if (op == O_logical_not) | |
1096 | left = !left; | |
1097 | else | |
1098 | left = ~left; | |
1099 | ||
1100 | final_val += left + symp->sy_frag->fr_address; | |
252b5132 | 1101 | |
49309057 | 1102 | resolved = symbol_resolved_p (add_symbol); |
252b5132 RH |
1103 | break; |
1104 | ||
1105 | case O_multiply: | |
1106 | case O_divide: | |
1107 | case O_modulus: | |
1108 | case O_left_shift: | |
1109 | case O_right_shift: | |
1110 | case O_bit_inclusive_or: | |
1111 | case O_bit_or_not: | |
1112 | case O_bit_exclusive_or: | |
1113 | case O_bit_and: | |
1114 | case O_add: | |
1115 | case O_subtract: | |
1116 | case O_eq: | |
1117 | case O_ne: | |
1118 | case O_lt: | |
1119 | case O_le: | |
1120 | case O_ge: | |
1121 | case O_gt: | |
1122 | case O_logical_and: | |
1123 | case O_logical_or: | |
6386f3a7 AM |
1124 | left = resolve_symbol_value (add_symbol); |
1125 | right = resolve_symbol_value (op_symbol); | |
252b5132 RH |
1126 | seg_left = S_GET_SEGMENT (add_symbol); |
1127 | seg_right = S_GET_SEGMENT (op_symbol); | |
1128 | ||
1129 | /* Simplify addition or subtraction of a constant by folding the | |
1130 | constant into X_add_number. */ | |
e0890092 | 1131 | if (op == O_add) |
252b5132 RH |
1132 | { |
1133 | if (seg_right == absolute_section) | |
1134 | { | |
e0890092 | 1135 | final_val += right; |
252b5132 RH |
1136 | goto do_symbol; |
1137 | } | |
e0890092 | 1138 | else if (seg_left == absolute_section) |
252b5132 | 1139 | { |
252b5132 RH |
1140 | final_val += left; |
1141 | add_symbol = op_symbol; | |
1142 | left = right; | |
e0890092 AM |
1143 | seg_left = seg_right; |
1144 | goto do_symbol; | |
1145 | } | |
1146 | } | |
1147 | else if (op == O_subtract) | |
1148 | { | |
1149 | if (seg_right == absolute_section) | |
1150 | { | |
1151 | final_val -= right; | |
252b5132 RH |
1152 | goto do_symbol; |
1153 | } | |
1154 | } | |
1155 | ||
e0890092 AM |
1156 | /* Equality and non-equality tests are permitted on anything. |
1157 | Subtraction, and other comparison operators are permitted if | |
1158 | both operands are in the same section. Otherwise, both | |
1159 | operands must be absolute. We already handled the case of | |
1160 | addition or subtraction of a constant above. This will | |
1161 | probably need to be changed for an object file format which | |
1162 | supports arbitrary expressions, such as IEEE-695. | |
1163 | ||
1164 | Don't emit messages unless we're finalizing the symbol value, | |
252b5132 | 1165 | otherwise we may get the same message multiple times. */ |
0909233e AM |
1166 | if (finalize_syms |
1167 | && !(seg_left == absolute_section | |
1168 | && seg_right == absolute_section) | |
1169 | && !(op == O_eq || op == O_ne) | |
1170 | && !((op == O_subtract | |
1171 | || op == O_lt || op == O_le || op == O_ge || op == O_gt) | |
1172 | && seg_left == seg_right | |
1173 | && (seg_left != undefined_section | |
1174 | || add_symbol == op_symbol))) | |
1175 | report_op_error (symp, add_symbol, op_symbol); | |
1d3b2b27 | 1176 | |
0909233e AM |
1177 | if (final_seg == expr_section || final_seg == undefined_section) |
1178 | final_seg = absolute_section; | |
252b5132 RH |
1179 | |
1180 | /* Check for division by zero. */ | |
1181 | if ((op == O_divide || op == O_modulus) && right == 0) | |
1182 | { | |
1183 | /* If seg_right is not absolute_section, then we've | |
e0890092 | 1184 | already issued a warning about using a bad symbol. */ |
6386f3a7 | 1185 | if (seg_right == absolute_section && finalize_syms) |
252b5132 RH |
1186 | { |
1187 | char *file; | |
1188 | unsigned int line; | |
1189 | ||
1190 | if (expr_symbol_where (symp, &file, &line)) | |
1191 | as_bad_where (file, line, _("division by zero")); | |
1192 | else | |
0e389e77 | 1193 | as_bad (_("division by zero when setting `%s'"), |
252b5132 RH |
1194 | S_GET_NAME (symp)); |
1195 | } | |
1196 | ||
1197 | right = 1; | |
1198 | } | |
1199 | ||
1200 | switch (symp->sy_value.X_op) | |
1201 | { | |
1202 | case O_multiply: left *= right; break; | |
1203 | case O_divide: left /= right; break; | |
1204 | case O_modulus: left %= right; break; | |
1205 | case O_left_shift: left <<= right; break; | |
1206 | case O_right_shift: left >>= right; break; | |
1207 | case O_bit_inclusive_or: left |= right; break; | |
1208 | case O_bit_or_not: left |= ~right; break; | |
1209 | case O_bit_exclusive_or: left ^= right; break; | |
1210 | case O_bit_and: left &= right; break; | |
1211 | case O_add: left += right; break; | |
1212 | case O_subtract: left -= right; break; | |
e0890092 AM |
1213 | case O_eq: |
1214 | case O_ne: | |
1215 | left = (left == right && seg_left == seg_right | |
1216 | && (seg_left != undefined_section | |
1217 | || add_symbol == op_symbol) | |
1218 | ? ~ (offsetT) 0 : 0); | |
1219 | if (symp->sy_value.X_op == O_ne) | |
1220 | left = ~left; | |
1221 | break; | |
252b5132 RH |
1222 | case O_lt: left = left < right ? ~ (offsetT) 0 : 0; break; |
1223 | case O_le: left = left <= right ? ~ (offsetT) 0 : 0; break; | |
1224 | case O_ge: left = left >= right ? ~ (offsetT) 0 : 0; break; | |
1225 | case O_gt: left = left > right ? ~ (offsetT) 0 : 0; break; | |
1226 | case O_logical_and: left = left && right; break; | |
1227 | case O_logical_or: left = left || right; break; | |
1228 | default: abort (); | |
1229 | } | |
1230 | ||
1231 | final_val += symp->sy_frag->fr_address + left; | |
1232 | if (final_seg == expr_section || final_seg == undefined_section) | |
784b640d AM |
1233 | { |
1234 | if (seg_left == undefined_section | |
1235 | || seg_right == undefined_section) | |
1236 | final_seg = undefined_section; | |
1237 | else if (seg_left == absolute_section) | |
1238 | final_seg = seg_right; | |
1239 | else | |
1240 | final_seg = seg_left; | |
1241 | } | |
49309057 ILT |
1242 | resolved = (symbol_resolved_p (add_symbol) |
1243 | && symbol_resolved_p (op_symbol)); | |
7c743825 | 1244 | break; |
252b5132 RH |
1245 | |
1246 | case O_register: | |
1247 | case O_big: | |
1248 | case O_illegal: | |
1249 | /* Give an error (below) if not in expr_section. We don't | |
1250 | want to worry about expr_section symbols, because they | |
1251 | are fictional (they are created as part of expression | |
1252 | resolution), and any problems may not actually mean | |
1253 | anything. */ | |
1254 | break; | |
1255 | } | |
1256 | ||
1257 | symp->sy_resolving = 0; | |
1258 | } | |
1259 | ||
6386f3a7 | 1260 | if (finalize_syms) |
05bdb37e | 1261 | S_SET_VALUE (symp, final_val); |
252b5132 | 1262 | |
05bdb37e AM |
1263 | exit_dont_set_value: |
1264 | /* Always set the segment, even if not finalizing the value. | |
1265 | The segment is used to determine whether a symbol is defined. */ | |
252b5132 | 1266 | #if defined (OBJ_AOUT) && ! defined (BFD_ASSEMBLER) |
05bdb37e AM |
1267 | /* The old a.out backend does not handle S_SET_SEGMENT correctly |
1268 | for a stab symbol, so we use this bad hack. */ | |
1269 | if (final_seg != S_GET_SEGMENT (symp)) | |
252b5132 | 1270 | #endif |
05bdb37e | 1271 | S_SET_SEGMENT (symp, final_seg); |
252b5132 | 1272 | |
252b5132 | 1273 | /* Don't worry if we can't resolve an expr_section symbol. */ |
6386f3a7 | 1274 | if (finalize_syms) |
252b5132 RH |
1275 | { |
1276 | if (resolved) | |
1277 | symp->sy_resolved = 1; | |
1278 | else if (S_GET_SEGMENT (symp) != expr_section) | |
1279 | { | |
0e389e77 | 1280 | as_bad (_("can't resolve value for symbol `%s'"), |
7c743825 | 1281 | S_GET_NAME (symp)); |
252b5132 RH |
1282 | symp->sy_resolved = 1; |
1283 | } | |
1284 | } | |
1285 | ||
1286 | return final_val; | |
1287 | } | |
1288 | ||
49309057 ILT |
1289 | #ifdef BFD_ASSEMBLER |
1290 | ||
1291 | static void resolve_local_symbol PARAMS ((const char *, PTR)); | |
1292 | ||
1293 | /* A static function passed to hash_traverse. */ | |
1294 | ||
1295 | static void | |
1296 | resolve_local_symbol (key, value) | |
ab9da554 | 1297 | const char *key ATTRIBUTE_UNUSED; |
49309057 ILT |
1298 | PTR value; |
1299 | { | |
1300 | if (value != NULL) | |
6386f3a7 | 1301 | resolve_symbol_value (value); |
49309057 ILT |
1302 | } |
1303 | ||
1304 | #endif | |
1305 | ||
1306 | /* Resolve all local symbols. */ | |
1307 | ||
1308 | void | |
1309 | resolve_local_symbol_values () | |
1310 | { | |
1311 | #ifdef BFD_ASSEMBLER | |
1312 | hash_traverse (local_hash, resolve_local_symbol); | |
1313 | #endif | |
1314 | } | |
1315 | ||
252b5132 RH |
1316 | /* Dollar labels look like a number followed by a dollar sign. Eg, "42$". |
1317 | They are *really* local. That is, they go out of scope whenever we see a | |
1318 | label that isn't local. Also, like fb labels, there can be multiple | |
1319 | instances of a dollar label. Therefor, we name encode each instance with | |
1320 | the instance number, keep a list of defined symbols separate from the real | |
1321 | symbol table, and we treat these buggers as a sparse array. */ | |
1322 | ||
1323 | static long *dollar_labels; | |
1324 | static long *dollar_label_instances; | |
1325 | static char *dollar_label_defines; | |
1326 | static unsigned long dollar_label_count; | |
1327 | static unsigned long dollar_label_max; | |
1328 | ||
7c743825 | 1329 | int |
252b5132 RH |
1330 | dollar_label_defined (label) |
1331 | long label; | |
1332 | { | |
1333 | long *i; | |
1334 | ||
1335 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1336 | ||
1337 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1338 | if (*i == label) | |
1339 | return dollar_label_defines[i - dollar_labels]; | |
1340 | ||
7c743825 | 1341 | /* If we get here, label isn't defined. */ |
252b5132 | 1342 | return 0; |
7c743825 | 1343 | } |
252b5132 RH |
1344 | |
1345 | static long | |
1346 | dollar_label_instance (label) | |
1347 | long label; | |
1348 | { | |
1349 | long *i; | |
1350 | ||
1351 | know ((dollar_labels != NULL) || (dollar_label_count == 0)); | |
1352 | ||
1353 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1354 | if (*i == label) | |
1355 | return (dollar_label_instances[i - dollar_labels]); | |
1356 | ||
7c743825 KH |
1357 | /* If we get here, we haven't seen the label before. |
1358 | Therefore its instance count is zero. */ | |
252b5132 RH |
1359 | return 0; |
1360 | } | |
1361 | ||
7c743825 | 1362 | void |
252b5132 RH |
1363 | dollar_label_clear () |
1364 | { | |
1365 | memset (dollar_label_defines, '\0', (unsigned int) dollar_label_count); | |
1366 | } | |
1367 | ||
1368 | #define DOLLAR_LABEL_BUMP_BY 10 | |
1369 | ||
7c743825 | 1370 | void |
252b5132 RH |
1371 | define_dollar_label (label) |
1372 | long label; | |
1373 | { | |
1374 | long *i; | |
1375 | ||
1376 | for (i = dollar_labels; i < dollar_labels + dollar_label_count; ++i) | |
1377 | if (*i == label) | |
1378 | { | |
1379 | ++dollar_label_instances[i - dollar_labels]; | |
1380 | dollar_label_defines[i - dollar_labels] = 1; | |
1381 | return; | |
1382 | } | |
1383 | ||
7c743825 | 1384 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1385 | |
1386 | if (dollar_labels == NULL) | |
1387 | { | |
1388 | dollar_labels = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1389 | dollar_label_instances = (long *) xmalloc (DOLLAR_LABEL_BUMP_BY * sizeof (long)); | |
1390 | dollar_label_defines = xmalloc (DOLLAR_LABEL_BUMP_BY); | |
1391 | dollar_label_max = DOLLAR_LABEL_BUMP_BY; | |
1392 | dollar_label_count = 0; | |
1393 | } | |
1394 | else if (dollar_label_count == dollar_label_max) | |
1395 | { | |
1396 | dollar_label_max += DOLLAR_LABEL_BUMP_BY; | |
1397 | dollar_labels = (long *) xrealloc ((char *) dollar_labels, | |
1398 | dollar_label_max * sizeof (long)); | |
1399 | dollar_label_instances = (long *) xrealloc ((char *) dollar_label_instances, | |
1400 | dollar_label_max * sizeof (long)); | |
1401 | dollar_label_defines = xrealloc (dollar_label_defines, dollar_label_max); | |
7c743825 | 1402 | } /* if we needed to grow */ |
252b5132 RH |
1403 | |
1404 | dollar_labels[dollar_label_count] = label; | |
1405 | dollar_label_instances[dollar_label_count] = 1; | |
1406 | dollar_label_defines[dollar_label_count] = 1; | |
1407 | ++dollar_label_count; | |
1408 | } | |
1409 | ||
7c743825 KH |
1410 | /* Caller must copy returned name: we re-use the area for the next name. |
1411 | ||
1412 | The mth occurence of label n: is turned into the symbol "Ln^Am" | |
1413 | where n is the label number and m is the instance number. "L" makes | |
1414 | it a label discarded unless debugging and "^A"('\1') ensures no | |
1415 | ordinary symbol SHOULD get the same name as a local label | |
1416 | symbol. The first "4:" is "L4^A1" - the m numbers begin at 1. | |
1417 | ||
1418 | fb labels get the same treatment, except that ^B is used in place | |
1419 | of ^A. */ | |
1420 | ||
1421 | char * /* Return local label name. */ | |
252b5132 | 1422 | dollar_label_name (n, augend) |
7c743825 KH |
1423 | register long n; /* we just saw "n$:" : n a number. */ |
1424 | register int augend; /* 0 for current instance, 1 for new instance. */ | |
252b5132 RH |
1425 | { |
1426 | long i; | |
7c743825 | 1427 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1428 | static char symbol_name_build[24]; |
1429 | register char *p; | |
1430 | register char *q; | |
7c743825 | 1431 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1432 | |
1433 | know (n >= 0); | |
1434 | know (augend == 0 || augend == 1); | |
1435 | p = symbol_name_build; | |
f84dd1f0 NC |
1436 | #ifdef LOCAL_LABEL_PREFIX |
1437 | *p++ = LOCAL_LABEL_PREFIX; | |
1438 | #endif | |
252b5132 RH |
1439 | *p++ = 'L'; |
1440 | ||
7c743825 KH |
1441 | /* Next code just does sprintf( {}, "%d", n); */ |
1442 | /* Label number. */ | |
252b5132 RH |
1443 | q = symbol_name_temporary; |
1444 | for (*q++ = 0, i = n; i; ++q) | |
1445 | { | |
1446 | *q = i % 10 + '0'; | |
1447 | i /= 10; | |
1448 | } | |
1449 | while ((*p = *--q) != '\0') | |
1450 | ++p; | |
1451 | ||
aa257fcd | 1452 | *p++ = DOLLAR_LABEL_CHAR; /* ^A */ |
252b5132 | 1453 | |
7c743825 | 1454 | /* Instance number. */ |
252b5132 RH |
1455 | q = symbol_name_temporary; |
1456 | for (*q++ = 0, i = dollar_label_instance (n) + augend; i; ++q) | |
1457 | { | |
1458 | *q = i % 10 + '0'; | |
1459 | i /= 10; | |
1460 | } | |
1461 | while ((*p++ = *--q) != '\0');; | |
1462 | ||
7c743825 | 1463 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 RH |
1464 | return symbol_name_build; |
1465 | } | |
1466 | ||
7c743825 KH |
1467 | /* Sombody else's idea of local labels. They are made by "n:" where n |
1468 | is any decimal digit. Refer to them with | |
1469 | "nb" for previous (backward) n: | |
1470 | or "nf" for next (forward) n:. | |
1471 | ||
1472 | We do a little better and let n be any number, not just a single digit, but | |
1473 | since the other guy's assembler only does ten, we treat the first ten | |
1474 | specially. | |
1475 | ||
1476 | Like someone else's assembler, we have one set of local label counters for | |
1477 | entire assembly, not one set per (sub)segment like in most assemblers. This | |
1478 | implies that one can refer to a label in another segment, and indeed some | |
1479 | crufty compilers have done just that. | |
1480 | ||
1481 | Since there could be a LOT of these things, treat them as a sparse | |
1482 | array. */ | |
252b5132 RH |
1483 | |
1484 | #define FB_LABEL_SPECIAL (10) | |
1485 | ||
1486 | static long fb_low_counter[FB_LABEL_SPECIAL]; | |
1487 | static long *fb_labels; | |
1488 | static long *fb_label_instances; | |
1489 | static long fb_label_count; | |
1490 | static long fb_label_max; | |
1491 | ||
7c743825 | 1492 | /* This must be more than FB_LABEL_SPECIAL. */ |
252b5132 RH |
1493 | #define FB_LABEL_BUMP_BY (FB_LABEL_SPECIAL + 6) |
1494 | ||
7c743825 | 1495 | static void |
252b5132 RH |
1496 | fb_label_init () |
1497 | { | |
1498 | memset ((void *) fb_low_counter, '\0', sizeof (fb_low_counter)); | |
7c743825 | 1499 | } |
252b5132 | 1500 | |
7c743825 KH |
1501 | /* Add one to the instance number of this fb label. */ |
1502 | ||
1503 | void | |
252b5132 RH |
1504 | fb_label_instance_inc (label) |
1505 | long label; | |
1506 | { | |
1507 | long *i; | |
1508 | ||
1509 | if (label < FB_LABEL_SPECIAL) | |
1510 | { | |
1511 | ++fb_low_counter[label]; | |
1512 | return; | |
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 | ++fb_label_instances[i - fb_labels]; | |
1523 | return; | |
7c743825 KH |
1524 | } /* if we find it */ |
1525 | } /* for each existing label */ | |
252b5132 RH |
1526 | } |
1527 | ||
7c743825 | 1528 | /* If we get to here, we don't have label listed yet. */ |
252b5132 RH |
1529 | |
1530 | if (fb_labels == NULL) | |
1531 | { | |
1532 | fb_labels = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1533 | fb_label_instances = (long *) xmalloc (FB_LABEL_BUMP_BY * sizeof (long)); | |
1534 | fb_label_max = FB_LABEL_BUMP_BY; | |
1535 | fb_label_count = FB_LABEL_SPECIAL; | |
1536 | ||
1537 | } | |
1538 | else if (fb_label_count == fb_label_max) | |
1539 | { | |
1540 | fb_label_max += FB_LABEL_BUMP_BY; | |
1541 | fb_labels = (long *) xrealloc ((char *) fb_labels, | |
1542 | fb_label_max * sizeof (long)); | |
1543 | fb_label_instances = (long *) xrealloc ((char *) fb_label_instances, | |
1544 | fb_label_max * sizeof (long)); | |
7c743825 | 1545 | } /* if we needed to grow */ |
252b5132 RH |
1546 | |
1547 | fb_labels[fb_label_count] = label; | |
1548 | fb_label_instances[fb_label_count] = 1; | |
1549 | ++fb_label_count; | |
1550 | } | |
1551 | ||
7c743825 | 1552 | static long |
252b5132 RH |
1553 | fb_label_instance (label) |
1554 | long label; | |
1555 | { | |
1556 | long *i; | |
1557 | ||
1558 | if (label < FB_LABEL_SPECIAL) | |
1559 | { | |
1560 | return (fb_low_counter[label]); | |
1561 | } | |
1562 | ||
1563 | if (fb_labels != NULL) | |
1564 | { | |
1565 | for (i = fb_labels + FB_LABEL_SPECIAL; | |
1566 | i < fb_labels + fb_label_count; ++i) | |
1567 | { | |
1568 | if (*i == label) | |
1569 | { | |
1570 | return (fb_label_instances[i - fb_labels]); | |
7c743825 KH |
1571 | } /* if we find it */ |
1572 | } /* for each existing label */ | |
252b5132 RH |
1573 | } |
1574 | ||
1575 | /* We didn't find the label, so this must be a reference to the | |
1576 | first instance. */ | |
1577 | return 0; | |
1578 | } | |
1579 | ||
7c743825 KH |
1580 | /* Caller must copy returned name: we re-use the area for the next name. |
1581 | ||
1582 | The mth occurence of label n: is turned into the symbol "Ln^Bm" | |
1583 | where n is the label number and m is the instance number. "L" makes | |
1584 | it a label discarded unless debugging and "^B"('\2') ensures no | |
1585 | ordinary symbol SHOULD get the same name as a local label | |
1586 | symbol. The first "4:" is "L4^B1" - the m numbers begin at 1. | |
1587 | ||
1588 | dollar labels get the same treatment, except that ^A is used in | |
1589 | place of ^B. */ | |
1590 | ||
1591 | char * /* Return local label name. */ | |
252b5132 | 1592 | fb_label_name (n, augend) |
7c743825 KH |
1593 | long n; /* We just saw "n:", "nf" or "nb" : n a number. */ |
1594 | long augend; /* 0 for nb, 1 for n:, nf. */ | |
252b5132 RH |
1595 | { |
1596 | long i; | |
7c743825 | 1597 | /* Returned to caller, then copied. Used for created names ("4f"). */ |
252b5132 RH |
1598 | static char symbol_name_build[24]; |
1599 | register char *p; | |
1600 | register char *q; | |
7c743825 | 1601 | char symbol_name_temporary[20]; /* Build up a number, BACKWARDS. */ |
252b5132 RH |
1602 | |
1603 | know (n >= 0); | |
1604 | know (augend == 0 || augend == 1); | |
1605 | p = symbol_name_build; | |
aa257fcd NC |
1606 | #ifdef LOCAL_LABEL_PREFIX |
1607 | *p++ = LOCAL_LABEL_PREFIX; | |
1608 | #endif | |
252b5132 RH |
1609 | *p++ = 'L'; |
1610 | ||
7c743825 KH |
1611 | /* Next code just does sprintf( {}, "%d", n); */ |
1612 | /* Label number. */ | |
252b5132 RH |
1613 | q = symbol_name_temporary; |
1614 | for (*q++ = 0, i = n; i; ++q) | |
1615 | { | |
1616 | *q = i % 10 + '0'; | |
1617 | i /= 10; | |
1618 | } | |
1619 | while ((*p = *--q) != '\0') | |
1620 | ++p; | |
1621 | ||
aa257fcd | 1622 | *p++ = LOCAL_LABEL_CHAR; /* ^B */ |
252b5132 | 1623 | |
7c743825 | 1624 | /* Instance number. */ |
252b5132 RH |
1625 | q = symbol_name_temporary; |
1626 | for (*q++ = 0, i = fb_label_instance (n) + augend; i; ++q) | |
1627 | { | |
1628 | *q = i % 10 + '0'; | |
1629 | i /= 10; | |
1630 | } | |
1631 | while ((*p++ = *--q) != '\0');; | |
1632 | ||
7c743825 | 1633 | /* The label, as a '\0' ended string, starts at symbol_name_build. */ |
252b5132 | 1634 | return (symbol_name_build); |
7c743825 | 1635 | } |
252b5132 | 1636 | |
7c743825 KH |
1637 | /* Decode name that may have been generated by foo_label_name() above. |
1638 | If the name wasn't generated by foo_label_name(), then return it | |
1639 | unaltered. This is used for error messages. */ | |
252b5132 RH |
1640 | |
1641 | char * | |
1642 | decode_local_label_name (s) | |
1643 | char *s; | |
1644 | { | |
1645 | char *p; | |
1646 | char *symbol_decode; | |
1647 | int label_number; | |
1648 | int instance_number; | |
1649 | char *type; | |
d95767bf | 1650 | const char *message_format; |
aa257fcd | 1651 | int index = 0; |
43ad3147 | 1652 | |
aa257fcd NC |
1653 | #ifdef LOCAL_LABEL_PREFIX |
1654 | if (s[index] == LOCAL_LABEL_PREFIX) | |
1655 | ++index; | |
1656 | #endif | |
43ad3147 | 1657 | |
aa257fcd | 1658 | if (s[index] != 'L') |
252b5132 RH |
1659 | return s; |
1660 | ||
3882b010 | 1661 | for (label_number = 0, p = s + index + 1; ISDIGIT (*p); ++p) |
252b5132 RH |
1662 | label_number = (10 * label_number) + *p - '0'; |
1663 | ||
aa257fcd | 1664 | if (*p == DOLLAR_LABEL_CHAR) |
252b5132 | 1665 | type = "dollar"; |
aa257fcd | 1666 | else if (*p == LOCAL_LABEL_CHAR) |
252b5132 RH |
1667 | type = "fb"; |
1668 | else | |
1669 | return s; | |
1670 | ||
3882b010 | 1671 | for (instance_number = 0, p++; ISDIGIT (*p); ++p) |
252b5132 RH |
1672 | instance_number = (10 * instance_number) + *p - '0'; |
1673 | ||
d95767bf | 1674 | message_format = _("\"%d\" (instance number %d of a %s label)"); |
252b5132 RH |
1675 | symbol_decode = obstack_alloc (¬es, strlen (message_format) + 30); |
1676 | sprintf (symbol_decode, message_format, label_number, instance_number, type); | |
1677 | ||
1678 | return symbol_decode; | |
1679 | } | |
1680 | ||
1681 | /* Get the value of a symbol. */ | |
1682 | ||
1683 | valueT | |
1684 | S_GET_VALUE (s) | |
1685 | symbolS *s; | |
1686 | { | |
a1605869 | 1687 | #ifdef BFD_ASSEMBLER |
49309057 | 1688 | if (LOCAL_SYMBOL_CHECK (s)) |
ac62c346 | 1689 | return resolve_symbol_value (s); |
a1605869 | 1690 | #endif |
49309057 | 1691 | |
ac62c346 | 1692 | if (!s->sy_resolved) |
e46d99eb | 1693 | { |
6386f3a7 AM |
1694 | valueT val = resolve_symbol_value (s); |
1695 | if (!finalize_syms) | |
e46d99eb AM |
1696 | return val; |
1697 | } | |
252b5132 RH |
1698 | if (s->sy_value.X_op != O_constant) |
1699 | { | |
1700 | static symbolS *recur; | |
1701 | ||
1702 | /* FIXME: In non BFD assemblers, S_IS_DEFINED and S_IS_COMMON | |
1d3b2b27 AM |
1703 | may call S_GET_VALUE. We use a static symbol to avoid the |
1704 | immediate recursion. */ | |
252b5132 RH |
1705 | if (recur == s) |
1706 | return (valueT) s->sy_value.X_add_number; | |
1707 | recur = s; | |
1708 | if (! s->sy_resolved | |
1709 | || s->sy_value.X_op != O_symbol | |
1710 | || (S_IS_DEFINED (s) && ! S_IS_COMMON (s))) | |
0e389e77 | 1711 | as_bad (_("attempt to get value of unresolved symbol `%s'"), |
252b5132 RH |
1712 | S_GET_NAME (s)); |
1713 | recur = NULL; | |
1714 | } | |
1715 | return (valueT) s->sy_value.X_add_number; | |
1716 | } | |
1717 | ||
1718 | /* Set the value of a symbol. */ | |
1719 | ||
1720 | void | |
1721 | S_SET_VALUE (s, val) | |
1722 | symbolS *s; | |
1723 | valueT val; | |
1724 | { | |
a1605869 | 1725 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
1726 | if (LOCAL_SYMBOL_CHECK (s)) |
1727 | { | |
bd780143 | 1728 | ((struct local_symbol *) s)->lsy_value = val; |
49309057 ILT |
1729 | return; |
1730 | } | |
a1605869 | 1731 | #endif |
49309057 | 1732 | |
252b5132 RH |
1733 | s->sy_value.X_op = O_constant; |
1734 | s->sy_value.X_add_number = (offsetT) val; | |
1735 | s->sy_value.X_unsigned = 0; | |
1736 | } | |
1737 | ||
1738 | void | |
1739 | copy_symbol_attributes (dest, src) | |
1740 | symbolS *dest, *src; | |
1741 | { | |
49309057 | 1742 | if (LOCAL_SYMBOL_CHECK (dest)) |
7f2f689c | 1743 | dest = local_symbol_convert ((struct local_symbol *) dest); |
49309057 | 1744 | if (LOCAL_SYMBOL_CHECK (src)) |
7f2f689c | 1745 | src = local_symbol_convert ((struct local_symbol *) src); |
49309057 | 1746 | |
252b5132 RH |
1747 | #ifdef BFD_ASSEMBLER |
1748 | /* In an expression, transfer the settings of these flags. | |
1749 | The user can override later, of course. */ | |
1750 | #define COPIED_SYMFLAGS (BSF_FUNCTION | BSF_OBJECT) | |
1751 | dest->bsym->flags |= src->bsym->flags & COPIED_SYMFLAGS; | |
1752 | #endif | |
1753 | ||
1754 | #ifdef OBJ_COPY_SYMBOL_ATTRIBUTES | |
1755 | OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); | |
1756 | #endif | |
1757 | } | |
1758 | ||
1759 | #ifdef BFD_ASSEMBLER | |
1760 | ||
1761 | int | |
1762 | S_IS_FUNCTION (s) | |
1763 | symbolS *s; | |
1764 | { | |
49309057 ILT |
1765 | flagword flags; |
1766 | ||
1767 | if (LOCAL_SYMBOL_CHECK (s)) | |
1768 | return 0; | |
1769 | ||
1770 | flags = s->bsym->flags; | |
252b5132 RH |
1771 | |
1772 | return (flags & BSF_FUNCTION) != 0; | |
1773 | } | |
1774 | ||
1775 | int | |
1776 | S_IS_EXTERNAL (s) | |
1777 | symbolS *s; | |
1778 | { | |
49309057 ILT |
1779 | flagword flags; |
1780 | ||
1781 | if (LOCAL_SYMBOL_CHECK (s)) | |
1782 | return 0; | |
1783 | ||
1784 | flags = s->bsym->flags; | |
252b5132 | 1785 | |
7c743825 | 1786 | /* Sanity check. */ |
252b5132 RH |
1787 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1788 | abort (); | |
1789 | ||
1790 | return (flags & BSF_GLOBAL) != 0; | |
1791 | } | |
1792 | ||
1793 | int | |
1794 | S_IS_WEAK (s) | |
1795 | symbolS *s; | |
1796 | { | |
49309057 ILT |
1797 | if (LOCAL_SYMBOL_CHECK (s)) |
1798 | return 0; | |
252b5132 RH |
1799 | return (s->bsym->flags & BSF_WEAK) != 0; |
1800 | } | |
1801 | ||
1802 | int | |
1803 | S_IS_COMMON (s) | |
1804 | symbolS *s; | |
1805 | { | |
49309057 ILT |
1806 | if (LOCAL_SYMBOL_CHECK (s)) |
1807 | return 0; | |
252b5132 RH |
1808 | return bfd_is_com_section (s->bsym->section); |
1809 | } | |
1810 | ||
1811 | int | |
1812 | S_IS_DEFINED (s) | |
1813 | symbolS *s; | |
1814 | { | |
49309057 ILT |
1815 | if (LOCAL_SYMBOL_CHECK (s)) |
1816 | return ((struct local_symbol *) s)->lsy_section != undefined_section; | |
252b5132 RH |
1817 | return s->bsym->section != undefined_section; |
1818 | } | |
1819 | ||
a161fe53 AM |
1820 | |
1821 | #ifndef EXTERN_FORCE_RELOC | |
1822 | #define EXTERN_FORCE_RELOC IS_ELF | |
1823 | #endif | |
1824 | ||
1825 | /* Return true for symbols that should not be reduced to section | |
1826 | symbols or eliminated from expressions, because they may be | |
1827 | overridden by the linker. */ | |
1828 | int | |
ae6063d4 | 1829 | S_FORCE_RELOC (s, strict) |
a161fe53 | 1830 | symbolS *s; |
ae6063d4 | 1831 | int strict; |
a161fe53 AM |
1832 | { |
1833 | if (LOCAL_SYMBOL_CHECK (s)) | |
1834 | return ((struct local_symbol *) s)->lsy_section == undefined_section; | |
1835 | ||
ae6063d4 AM |
1836 | return ((strict |
1837 | && ((s->bsym->flags & BSF_WEAK) != 0 | |
1838 | || (EXTERN_FORCE_RELOC | |
1839 | && (s->bsym->flags & BSF_GLOBAL) != 0))) | |
a161fe53 AM |
1840 | || s->bsym->section == undefined_section |
1841 | || bfd_is_com_section (s->bsym->section)); | |
1842 | } | |
1843 | ||
252b5132 RH |
1844 | int |
1845 | S_IS_DEBUG (s) | |
1846 | symbolS *s; | |
1847 | { | |
49309057 ILT |
1848 | if (LOCAL_SYMBOL_CHECK (s)) |
1849 | return 0; | |
252b5132 RH |
1850 | if (s->bsym->flags & BSF_DEBUGGING) |
1851 | return 1; | |
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | int | |
1856 | S_IS_LOCAL (s) | |
1857 | symbolS *s; | |
1858 | { | |
49309057 | 1859 | flagword flags; |
252b5132 RH |
1860 | const char *name; |
1861 | ||
49309057 ILT |
1862 | if (LOCAL_SYMBOL_CHECK (s)) |
1863 | return 1; | |
1864 | ||
1865 | flags = s->bsym->flags; | |
1866 | ||
7c743825 | 1867 | /* Sanity check. */ |
252b5132 RH |
1868 | if ((flags & BSF_LOCAL) && (flags & BSF_GLOBAL)) |
1869 | abort (); | |
1870 | ||
1871 | if (bfd_get_section (s->bsym) == reg_section) | |
1872 | return 1; | |
1873 | ||
1874 | if (flag_strip_local_absolute | |
1875 | && (flags & BSF_GLOBAL) == 0 | |
1876 | && bfd_get_section (s->bsym) == absolute_section) | |
1877 | return 1; | |
1878 | ||
1879 | name = S_GET_NAME (s); | |
1880 | return (name != NULL | |
1881 | && ! S_IS_DEBUG (s) | |
aa257fcd NC |
1882 | && (strchr (name, DOLLAR_LABEL_CHAR) |
1883 | || strchr (name, LOCAL_LABEL_CHAR) | |
252b5132 RH |
1884 | || (! flag_keep_locals |
1885 | && (bfd_is_local_label (stdoutput, s->bsym) | |
1886 | || (flag_mri | |
1887 | && name[0] == '?' | |
1888 | && name[1] == '?'))))); | |
1889 | } | |
1890 | ||
1891 | int | |
1892 | S_IS_EXTERN (s) | |
1893 | symbolS *s; | |
1894 | { | |
1895 | return S_IS_EXTERNAL (s); | |
1896 | } | |
1897 | ||
1898 | int | |
1899 | S_IS_STABD (s) | |
1900 | symbolS *s; | |
1901 | { | |
1902 | return S_GET_NAME (s) == 0; | |
1903 | } | |
1904 | ||
9758f3fc | 1905 | const char * |
252b5132 RH |
1906 | S_GET_NAME (s) |
1907 | symbolS *s; | |
1908 | { | |
49309057 ILT |
1909 | if (LOCAL_SYMBOL_CHECK (s)) |
1910 | return ((struct local_symbol *) s)->lsy_name; | |
252b5132 RH |
1911 | return s->bsym->name; |
1912 | } | |
1913 | ||
1914 | segT | |
1915 | S_GET_SEGMENT (s) | |
1916 | symbolS *s; | |
1917 | { | |
49309057 ILT |
1918 | if (LOCAL_SYMBOL_CHECK (s)) |
1919 | return ((struct local_symbol *) s)->lsy_section; | |
252b5132 RH |
1920 | return s->bsym->section; |
1921 | } | |
1922 | ||
1923 | void | |
1924 | S_SET_SEGMENT (s, seg) | |
1925 | symbolS *s; | |
1926 | segT seg; | |
1927 | { | |
1928 | /* Don't reassign section symbols. The direct reason is to prevent seg | |
1929 | faults assigning back to const global symbols such as *ABS*, but it | |
1930 | shouldn't happen anyway. */ | |
1931 | ||
49309057 ILT |
1932 | if (LOCAL_SYMBOL_CHECK (s)) |
1933 | { | |
1934 | if (seg == reg_section) | |
1935 | s = local_symbol_convert ((struct local_symbol *) s); | |
1936 | else | |
1937 | { | |
1938 | ((struct local_symbol *) s)->lsy_section = seg; | |
1939 | return; | |
1940 | } | |
1941 | } | |
1942 | ||
252b5132 RH |
1943 | if (s->bsym->flags & BSF_SECTION_SYM) |
1944 | { | |
1945 | if (s->bsym->section != seg) | |
7c743825 | 1946 | abort (); |
252b5132 RH |
1947 | } |
1948 | else | |
1949 | s->bsym->section = seg; | |
1950 | } | |
1951 | ||
1952 | void | |
1953 | S_SET_EXTERNAL (s) | |
1954 | symbolS *s; | |
1955 | { | |
49309057 ILT |
1956 | if (LOCAL_SYMBOL_CHECK (s)) |
1957 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 RH |
1958 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1959 | { | |
1960 | /* Let .weak override .global. */ | |
1961 | return; | |
1962 | } | |
4d7c34bf NC |
1963 | if (s->bsym->flags & BSF_SECTION_SYM) |
1964 | { | |
1965 | char * file; | |
1966 | unsigned int line; | |
d1a6c242 | 1967 | |
4d7c34bf NC |
1968 | /* Do not reassign section symbols. */ |
1969 | as_where (& file, & line); | |
1970 | as_warn_where (file, line, | |
0e389e77 | 1971 | _("section symbols are already global")); |
4d7c34bf NC |
1972 | return; |
1973 | } | |
252b5132 | 1974 | s->bsym->flags |= BSF_GLOBAL; |
7c743825 | 1975 | s->bsym->flags &= ~(BSF_LOCAL | BSF_WEAK); |
252b5132 RH |
1976 | } |
1977 | ||
1978 | void | |
1979 | S_CLEAR_EXTERNAL (s) | |
1980 | symbolS *s; | |
1981 | { | |
49309057 ILT |
1982 | if (LOCAL_SYMBOL_CHECK (s)) |
1983 | return; | |
252b5132 RH |
1984 | if ((s->bsym->flags & BSF_WEAK) != 0) |
1985 | { | |
1986 | /* Let .weak override. */ | |
1987 | return; | |
1988 | } | |
1989 | s->bsym->flags |= BSF_LOCAL; | |
7c743825 | 1990 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_WEAK); |
252b5132 RH |
1991 | } |
1992 | ||
1993 | void | |
1994 | S_SET_WEAK (s) | |
1995 | symbolS *s; | |
1996 | { | |
49309057 ILT |
1997 | if (LOCAL_SYMBOL_CHECK (s)) |
1998 | s = local_symbol_convert ((struct local_symbol *) s); | |
252b5132 | 1999 | s->bsym->flags |= BSF_WEAK; |
7c743825 | 2000 | s->bsym->flags &= ~(BSF_GLOBAL | BSF_LOCAL); |
252b5132 RH |
2001 | } |
2002 | ||
00f7efb6 JJ |
2003 | void |
2004 | S_SET_THREAD_LOCAL (s) | |
2005 | symbolS *s; | |
2006 | { | |
2007 | if (LOCAL_SYMBOL_CHECK (s)) | |
2008 | s = local_symbol_convert ((struct local_symbol *) s); | |
2009 | if (bfd_is_com_section (s->bsym->section) | |
2010 | && (s->bsym->flags & BSF_THREAD_LOCAL) != 0) | |
2011 | return; | |
2012 | s->bsym->flags |= BSF_THREAD_LOCAL; | |
2013 | if ((s->bsym->flags & BSF_FUNCTION) != 0) | |
2014 | as_bad (_("Accessing function `%s' as thread-local object"), | |
2015 | S_GET_NAME (s)); | |
2016 | else if (! bfd_is_und_section (s->bsym->section) | |
2017 | && (s->bsym->section->flags & SEC_THREAD_LOCAL) == 0) | |
2018 | as_bad (_("Accessing `%s' as thread-local object"), | |
2019 | S_GET_NAME (s)); | |
2020 | } | |
2021 | ||
252b5132 RH |
2022 | void |
2023 | S_SET_NAME (s, name) | |
2024 | symbolS *s; | |
2025 | char *name; | |
2026 | { | |
49309057 ILT |
2027 | if (LOCAL_SYMBOL_CHECK (s)) |
2028 | { | |
2029 | ((struct local_symbol *) s)->lsy_name = name; | |
2030 | return; | |
2031 | } | |
252b5132 RH |
2032 | s->bsym->name = name; |
2033 | } | |
2034 | #endif /* BFD_ASSEMBLER */ | |
2035 | ||
49309057 ILT |
2036 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
2037 | ||
2038 | /* Return the previous symbol in a chain. */ | |
2039 | ||
2040 | symbolS * | |
2041 | symbol_previous (s) | |
2042 | symbolS *s; | |
2043 | { | |
2044 | if (LOCAL_SYMBOL_CHECK (s)) | |
2045 | abort (); | |
2046 | return s->sy_previous; | |
2047 | } | |
2048 | ||
2049 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ | |
2050 | ||
2051 | /* Return the next symbol in a chain. */ | |
2052 | ||
2053 | symbolS * | |
2054 | symbol_next (s) | |
2055 | symbolS *s; | |
2056 | { | |
2057 | if (LOCAL_SYMBOL_CHECK (s)) | |
2058 | abort (); | |
2059 | return s->sy_next; | |
2060 | } | |
2061 | ||
2062 | /* Return a pointer to the value of a symbol as an expression. */ | |
2063 | ||
2064 | expressionS * | |
2065 | symbol_get_value_expression (s) | |
2066 | symbolS *s; | |
2067 | { | |
2068 | if (LOCAL_SYMBOL_CHECK (s)) | |
2069 | s = local_symbol_convert ((struct local_symbol *) s); | |
2070 | return &s->sy_value; | |
2071 | } | |
2072 | ||
2073 | /* Set the value of a symbol to an expression. */ | |
2074 | ||
2075 | void | |
2076 | symbol_set_value_expression (s, exp) | |
2077 | symbolS *s; | |
2078 | const expressionS *exp; | |
2079 | { | |
2080 | if (LOCAL_SYMBOL_CHECK (s)) | |
2081 | s = local_symbol_convert ((struct local_symbol *) s); | |
2082 | s->sy_value = *exp; | |
2083 | } | |
2084 | ||
b7d6ed97 RH |
2085 | /* Set the value of SYM to the current position in the current segment. */ |
2086 | ||
2087 | void | |
2088 | symbol_set_value_now (sym) | |
2089 | symbolS *sym; | |
2090 | { | |
2091 | S_SET_SEGMENT (sym, now_seg); | |
2092 | S_SET_VALUE (sym, frag_now_fix ()); | |
2093 | symbol_set_frag (sym, frag_now); | |
2094 | } | |
2095 | ||
49309057 ILT |
2096 | /* Set the frag of a symbol. */ |
2097 | ||
2098 | void | |
2099 | symbol_set_frag (s, f) | |
2100 | symbolS *s; | |
2101 | fragS *f; | |
2102 | { | |
a1605869 | 2103 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2104 | if (LOCAL_SYMBOL_CHECK (s)) |
2105 | { | |
2106 | local_symbol_set_frag ((struct local_symbol *) s, f); | |
2107 | return; | |
2108 | } | |
a1605869 | 2109 | #endif |
49309057 ILT |
2110 | s->sy_frag = f; |
2111 | } | |
2112 | ||
2113 | /* Return the frag of a symbol. */ | |
2114 | ||
2115 | fragS * | |
2116 | symbol_get_frag (s) | |
2117 | symbolS *s; | |
2118 | { | |
a1605869 | 2119 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2120 | if (LOCAL_SYMBOL_CHECK (s)) |
2121 | return local_symbol_get_frag ((struct local_symbol *) s); | |
a1605869 | 2122 | #endif |
49309057 ILT |
2123 | return s->sy_frag; |
2124 | } | |
2125 | ||
2126 | /* Mark a symbol as having been used. */ | |
2127 | ||
2128 | void | |
2129 | symbol_mark_used (s) | |
2130 | symbolS *s; | |
2131 | { | |
2132 | if (LOCAL_SYMBOL_CHECK (s)) | |
2133 | return; | |
2134 | s->sy_used = 1; | |
2135 | } | |
2136 | ||
2137 | /* Clear the mark of whether a symbol has been used. */ | |
2138 | ||
2139 | void | |
2140 | symbol_clear_used (s) | |
2141 | symbolS *s; | |
2142 | { | |
2143 | if (LOCAL_SYMBOL_CHECK (s)) | |
2144 | s = local_symbol_convert ((struct local_symbol *) s); | |
2145 | s->sy_used = 0; | |
2146 | } | |
2147 | ||
2148 | /* Return whether a symbol has been used. */ | |
2149 | ||
2150 | int | |
2151 | symbol_used_p (s) | |
2152 | symbolS *s; | |
2153 | { | |
2154 | if (LOCAL_SYMBOL_CHECK (s)) | |
2155 | return 1; | |
2156 | return s->sy_used; | |
2157 | } | |
2158 | ||
2159 | /* Mark a symbol as having been used in a reloc. */ | |
2160 | ||
2161 | void | |
2162 | symbol_mark_used_in_reloc (s) | |
2163 | symbolS *s; | |
2164 | { | |
2165 | if (LOCAL_SYMBOL_CHECK (s)) | |
2166 | s = local_symbol_convert ((struct local_symbol *) s); | |
2167 | s->sy_used_in_reloc = 1; | |
2168 | } | |
2169 | ||
2170 | /* Clear the mark of whether a symbol has been used in a reloc. */ | |
2171 | ||
2172 | void | |
2173 | symbol_clear_used_in_reloc (s) | |
2174 | symbolS *s; | |
2175 | { | |
2176 | if (LOCAL_SYMBOL_CHECK (s)) | |
2177 | return; | |
2178 | s->sy_used_in_reloc = 0; | |
2179 | } | |
2180 | ||
2181 | /* Return whether a symbol has been used in a reloc. */ | |
2182 | ||
2183 | int | |
2184 | symbol_used_in_reloc_p (s) | |
2185 | symbolS *s; | |
2186 | { | |
2187 | if (LOCAL_SYMBOL_CHECK (s)) | |
2188 | return 0; | |
2189 | return s->sy_used_in_reloc; | |
2190 | } | |
2191 | ||
2192 | /* Mark a symbol as an MRI common symbol. */ | |
2193 | ||
2194 | void | |
2195 | symbol_mark_mri_common (s) | |
2196 | symbolS *s; | |
2197 | { | |
2198 | if (LOCAL_SYMBOL_CHECK (s)) | |
2199 | s = local_symbol_convert ((struct local_symbol *) s); | |
2200 | s->sy_mri_common = 1; | |
2201 | } | |
2202 | ||
2203 | /* Clear the mark of whether a symbol is an MRI common symbol. */ | |
2204 | ||
2205 | void | |
2206 | symbol_clear_mri_common (s) | |
2207 | symbolS *s; | |
2208 | { | |
2209 | if (LOCAL_SYMBOL_CHECK (s)) | |
2210 | return; | |
2211 | s->sy_mri_common = 0; | |
2212 | } | |
2213 | ||
2214 | /* Return whether a symbol is an MRI common symbol. */ | |
2215 | ||
2216 | int | |
2217 | symbol_mri_common_p (s) | |
2218 | symbolS *s; | |
2219 | { | |
2220 | if (LOCAL_SYMBOL_CHECK (s)) | |
2221 | return 0; | |
2222 | return s->sy_mri_common; | |
2223 | } | |
2224 | ||
2225 | /* Mark a symbol as having been written. */ | |
2226 | ||
2227 | void | |
2228 | symbol_mark_written (s) | |
2229 | symbolS *s; | |
2230 | { | |
2231 | if (LOCAL_SYMBOL_CHECK (s)) | |
2232 | return; | |
2233 | s->written = 1; | |
2234 | } | |
2235 | ||
2236 | /* Clear the mark of whether a symbol has been written. */ | |
2237 | ||
2238 | void | |
2239 | symbol_clear_written (s) | |
2240 | symbolS *s; | |
2241 | { | |
2242 | if (LOCAL_SYMBOL_CHECK (s)) | |
2243 | return; | |
2244 | s->written = 0; | |
2245 | } | |
2246 | ||
2247 | /* Return whether a symbol has been written. */ | |
2248 | ||
2249 | int | |
2250 | symbol_written_p (s) | |
2251 | symbolS *s; | |
2252 | { | |
2253 | if (LOCAL_SYMBOL_CHECK (s)) | |
2254 | return 0; | |
2255 | return s->written; | |
2256 | } | |
2257 | ||
2258 | /* Mark a symbol has having been resolved. */ | |
2259 | ||
2260 | void | |
2261 | symbol_mark_resolved (s) | |
2262 | symbolS *s; | |
2263 | { | |
a1605869 | 2264 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2265 | if (LOCAL_SYMBOL_CHECK (s)) |
2266 | { | |
2267 | local_symbol_mark_resolved ((struct local_symbol *) s); | |
2268 | return; | |
2269 | } | |
a1605869 | 2270 | #endif |
49309057 ILT |
2271 | s->sy_resolved = 1; |
2272 | } | |
2273 | ||
2274 | /* Return whether a symbol has been resolved. */ | |
2275 | ||
2276 | int | |
2277 | symbol_resolved_p (s) | |
2278 | symbolS *s; | |
2279 | { | |
a1605869 | 2280 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2281 | if (LOCAL_SYMBOL_CHECK (s)) |
2282 | return local_symbol_resolved_p ((struct local_symbol *) s); | |
a1605869 | 2283 | #endif |
49309057 ILT |
2284 | return s->sy_resolved; |
2285 | } | |
2286 | ||
2287 | /* Return whether a symbol is a section symbol. */ | |
2288 | ||
2289 | int | |
2290 | symbol_section_p (s) | |
a04b544b | 2291 | symbolS *s ATTRIBUTE_UNUSED; |
49309057 ILT |
2292 | { |
2293 | if (LOCAL_SYMBOL_CHECK (s)) | |
2294 | return 0; | |
2295 | #ifdef BFD_ASSEMBLER | |
2296 | return (s->bsym->flags & BSF_SECTION_SYM) != 0; | |
2297 | #else | |
7c743825 | 2298 | /* FIXME. */ |
49309057 ILT |
2299 | return 0; |
2300 | #endif | |
2301 | } | |
2302 | ||
2303 | /* Return whether a symbol is equated to another symbol. */ | |
2304 | ||
2305 | int | |
2306 | symbol_equated_p (s) | |
2307 | symbolS *s; | |
2308 | { | |
2309 | if (LOCAL_SYMBOL_CHECK (s)) | |
2310 | return 0; | |
2311 | return s->sy_value.X_op == O_symbol; | |
2312 | } | |
2313 | ||
e0890092 AM |
2314 | /* Return whether a symbol is equated to another symbol, and should be |
2315 | treated specially when writing out relocs. */ | |
2316 | ||
2317 | int | |
2318 | symbol_equated_reloc_p (s) | |
2319 | symbolS *s; | |
2320 | { | |
2321 | if (LOCAL_SYMBOL_CHECK (s)) | |
2322 | return 0; | |
2323 | /* X_op_symbol, normally not used for O_symbol, is set by | |
2324 | resolve_symbol_value to flag expression syms that have been | |
2325 | equated. */ | |
2326 | return (s->sy_value.X_op == O_symbol | |
2327 | && ((s->sy_resolved && s->sy_value.X_op_symbol != NULL) | |
2328 | || ! S_IS_DEFINED (s) | |
2329 | || S_IS_COMMON (s))); | |
2330 | } | |
2331 | ||
49309057 ILT |
2332 | /* Return whether a symbol has a constant value. */ |
2333 | ||
2334 | int | |
2335 | symbol_constant_p (s) | |
2336 | symbolS *s; | |
2337 | { | |
2338 | if (LOCAL_SYMBOL_CHECK (s)) | |
2339 | return 1; | |
2340 | return s->sy_value.X_op == O_constant; | |
2341 | } | |
2342 | ||
2343 | #ifdef BFD_ASSEMBLER | |
2344 | ||
2345 | /* Return the BFD symbol for a symbol. */ | |
2346 | ||
2347 | asymbol * | |
2348 | symbol_get_bfdsym (s) | |
2349 | symbolS *s; | |
2350 | { | |
2351 | if (LOCAL_SYMBOL_CHECK (s)) | |
2352 | s = local_symbol_convert ((struct local_symbol *) s); | |
2353 | return s->bsym; | |
2354 | } | |
2355 | ||
2356 | /* Set the BFD symbol for a symbol. */ | |
2357 | ||
2358 | void | |
2359 | symbol_set_bfdsym (s, bsym) | |
2360 | symbolS *s; | |
2361 | asymbol *bsym; | |
2362 | { | |
2363 | if (LOCAL_SYMBOL_CHECK (s)) | |
2364 | s = local_symbol_convert ((struct local_symbol *) s); | |
2365 | s->bsym = bsym; | |
2366 | } | |
2367 | ||
2368 | #endif /* BFD_ASSEMBLER */ | |
2369 | ||
2370 | #ifdef OBJ_SYMFIELD_TYPE | |
2371 | ||
2372 | /* Get a pointer to the object format information for a symbol. */ | |
2373 | ||
2374 | OBJ_SYMFIELD_TYPE * | |
2375 | symbol_get_obj (s) | |
2376 | symbolS *s; | |
2377 | { | |
2378 | if (LOCAL_SYMBOL_CHECK (s)) | |
2379 | s = local_symbol_convert ((struct local_symbol *) s); | |
2380 | return &s->sy_obj; | |
2381 | } | |
2382 | ||
2383 | /* Set the object format information for a symbol. */ | |
2384 | ||
2385 | void | |
2386 | symbol_set_obj (s, o) | |
2387 | symbolS *s; | |
2388 | OBJ_SYMFIELD_TYPE *o; | |
2389 | { | |
2390 | if (LOCAL_SYMBOL_CHECK (s)) | |
2391 | s = local_symbol_convert ((struct local_symbol *) s); | |
2392 | s->sy_obj = *o; | |
2393 | } | |
2394 | ||
2395 | #endif /* OBJ_SYMFIELD_TYPE */ | |
2396 | ||
2397 | #ifdef TC_SYMFIELD_TYPE | |
2398 | ||
2399 | /* Get a pointer to the processor information for a symbol. */ | |
2400 | ||
2401 | TC_SYMFIELD_TYPE * | |
2402 | symbol_get_tc (s) | |
2403 | symbolS *s; | |
2404 | { | |
2405 | if (LOCAL_SYMBOL_CHECK (s)) | |
2406 | s = local_symbol_convert ((struct local_symbol *) s); | |
2407 | return &s->sy_tc; | |
2408 | } | |
2409 | ||
2410 | /* Set the processor information for a symbol. */ | |
2411 | ||
2412 | void | |
bf27257e | 2413 | symbol_set_tc (s, o) |
49309057 ILT |
2414 | symbolS *s; |
2415 | TC_SYMFIELD_TYPE *o; | |
2416 | { | |
2417 | if (LOCAL_SYMBOL_CHECK (s)) | |
2418 | s = local_symbol_convert ((struct local_symbol *) s); | |
2419 | s->sy_tc = *o; | |
2420 | } | |
2421 | ||
2422 | #endif /* TC_SYMFIELD_TYPE */ | |
2423 | ||
252b5132 RH |
2424 | void |
2425 | symbol_begin () | |
2426 | { | |
2427 | symbol_lastP = NULL; | |
7c743825 | 2428 | symbol_rootP = NULL; /* In case we have 0 symbols (!!) */ |
252b5132 | 2429 | sy_hash = hash_new (); |
49309057 ILT |
2430 | #ifdef BFD_ASSEMBLER |
2431 | local_hash = hash_new (); | |
2432 | #endif | |
252b5132 RH |
2433 | |
2434 | memset ((char *) (&abs_symbol), '\0', sizeof (abs_symbol)); | |
2435 | #ifdef BFD_ASSEMBLER | |
2436 | #if defined (EMIT_SECTION_SYMBOLS) || !defined (RELOC_REQUIRES_SYMBOL) | |
2437 | abs_symbol.bsym = bfd_abs_section.symbol; | |
2438 | #endif | |
2439 | #else | |
7c743825 | 2440 | /* Can't initialise a union. Sigh. */ |
252b5132 RH |
2441 | S_SET_SEGMENT (&abs_symbol, absolute_section); |
2442 | #endif | |
2443 | abs_symbol.sy_value.X_op = O_constant; | |
2444 | abs_symbol.sy_frag = &zero_address_frag; | |
2445 | ||
2446 | if (LOCAL_LABELS_FB) | |
2447 | fb_label_init (); | |
2448 | } | |
252b5132 RH |
2449 | \f |
2450 | int indent_level; | |
2451 | ||
2452 | /* Maximum indent level. | |
2453 | Available for modification inside a gdb session. */ | |
2454 | int max_indent_level = 8; | |
2455 | ||
2456 | #if 0 | |
2457 | ||
2458 | static void | |
2459 | indent () | |
2460 | { | |
2461 | printf ("%*s", indent_level * 4, ""); | |
2462 | } | |
2463 | ||
2464 | #endif | |
2465 | ||
2466 | void | |
2467 | print_symbol_value_1 (file, sym) | |
2468 | FILE *file; | |
2469 | symbolS *sym; | |
2470 | { | |
2471 | const char *name = S_GET_NAME (sym); | |
2472 | if (!name || !name[0]) | |
2473 | name = "(unnamed)"; | |
2474 | fprintf (file, "sym %lx %s", (unsigned long) sym, name); | |
49309057 ILT |
2475 | |
2476 | if (LOCAL_SYMBOL_CHECK (sym)) | |
2477 | { | |
a1605869 | 2478 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2479 | struct local_symbol *locsym = (struct local_symbol *) sym; |
2480 | if (local_symbol_get_frag (locsym) != &zero_address_frag | |
2481 | && local_symbol_get_frag (locsym) != NULL) | |
2482 | fprintf (file, " frag %lx", (long) local_symbol_get_frag (locsym)); | |
2483 | if (local_symbol_resolved_p (locsym)) | |
2484 | fprintf (file, " resolved"); | |
2485 | fprintf (file, " local"); | |
a1605869 | 2486 | #endif |
49309057 ILT |
2487 | } |
2488 | else | |
2489 | { | |
2490 | if (sym->sy_frag != &zero_address_frag) | |
2491 | fprintf (file, " frag %lx", (long) sym->sy_frag); | |
2492 | if (sym->written) | |
2493 | fprintf (file, " written"); | |
2494 | if (sym->sy_resolved) | |
2495 | fprintf (file, " resolved"); | |
2496 | else if (sym->sy_resolving) | |
2497 | fprintf (file, " resolving"); | |
2498 | if (sym->sy_used_in_reloc) | |
2499 | fprintf (file, " used-in-reloc"); | |
2500 | if (sym->sy_used) | |
2501 | fprintf (file, " used"); | |
2502 | if (S_IS_LOCAL (sym)) | |
2503 | fprintf (file, " local"); | |
2504 | if (S_IS_EXTERN (sym)) | |
2505 | fprintf (file, " extern"); | |
2506 | if (S_IS_DEBUG (sym)) | |
2507 | fprintf (file, " debug"); | |
2508 | if (S_IS_DEFINED (sym)) | |
2509 | fprintf (file, " defined"); | |
2510 | } | |
252b5132 | 2511 | fprintf (file, " %s", segment_name (S_GET_SEGMENT (sym))); |
49309057 | 2512 | if (symbol_resolved_p (sym)) |
252b5132 RH |
2513 | { |
2514 | segT s = S_GET_SEGMENT (sym); | |
2515 | ||
2516 | if (s != undefined_section | |
411863a4 | 2517 | && s != expr_section) |
252b5132 RH |
2518 | fprintf (file, " %lx", (long) S_GET_VALUE (sym)); |
2519 | } | |
2520 | else if (indent_level < max_indent_level | |
2521 | && S_GET_SEGMENT (sym) != undefined_section) | |
2522 | { | |
2523 | indent_level++; | |
2524 | fprintf (file, "\n%*s<", indent_level * 4, ""); | |
a1605869 | 2525 | #ifdef BFD_ASSEMBLER |
49309057 ILT |
2526 | if (LOCAL_SYMBOL_CHECK (sym)) |
2527 | fprintf (file, "constant %lx", | |
bd780143 | 2528 | (long) ((struct local_symbol *) sym)->lsy_value); |
49309057 | 2529 | else |
a1605869 | 2530 | #endif |
49309057 | 2531 | print_expr_1 (file, &sym->sy_value); |
252b5132 RH |
2532 | fprintf (file, ">"); |
2533 | indent_level--; | |
2534 | } | |
2535 | fflush (file); | |
2536 | } | |
2537 | ||
2538 | void | |
2539 | print_symbol_value (sym) | |
2540 | symbolS *sym; | |
2541 | { | |
2542 | indent_level = 0; | |
2543 | print_symbol_value_1 (stderr, sym); | |
2544 | fprintf (stderr, "\n"); | |
2545 | } | |
2546 | ||
2547 | static void | |
2548 | print_binary (file, name, exp) | |
2549 | FILE *file; | |
7c743825 | 2550 | const char *name; |
252b5132 RH |
2551 | expressionS *exp; |
2552 | { | |
2553 | indent_level++; | |
2554 | fprintf (file, "%s\n%*s<", name, indent_level * 4, ""); | |
2555 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2556 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2557 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2558 | fprintf (file, ">"); | |
2559 | indent_level--; | |
2560 | } | |
2561 | ||
2562 | void | |
2563 | print_expr_1 (file, exp) | |
2564 | FILE *file; | |
2565 | expressionS *exp; | |
2566 | { | |
2567 | fprintf (file, "expr %lx ", (long) exp); | |
2568 | switch (exp->X_op) | |
2569 | { | |
2570 | case O_illegal: | |
2571 | fprintf (file, "illegal"); | |
2572 | break; | |
2573 | case O_absent: | |
2574 | fprintf (file, "absent"); | |
2575 | break; | |
2576 | case O_constant: | |
2577 | fprintf (file, "constant %lx", (long) exp->X_add_number); | |
2578 | break; | |
2579 | case O_symbol: | |
2580 | indent_level++; | |
2581 | fprintf (file, "symbol\n%*s<", indent_level * 4, ""); | |
2582 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2583 | fprintf (file, ">"); | |
2584 | maybe_print_addnum: | |
2585 | if (exp->X_add_number) | |
2586 | fprintf (file, "\n%*s%lx", indent_level * 4, "", | |
2587 | (long) exp->X_add_number); | |
2588 | indent_level--; | |
2589 | break; | |
2590 | case O_register: | |
2591 | fprintf (file, "register #%d", (int) exp->X_add_number); | |
2592 | break; | |
2593 | case O_big: | |
2594 | fprintf (file, "big"); | |
2595 | break; | |
2596 | case O_uminus: | |
2597 | fprintf (file, "uminus -<"); | |
2598 | indent_level++; | |
2599 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2600 | fprintf (file, ">"); | |
2601 | goto maybe_print_addnum; | |
2602 | case O_bit_not: | |
2603 | fprintf (file, "bit_not"); | |
2604 | break; | |
2605 | case O_multiply: | |
2606 | print_binary (file, "multiply", exp); | |
2607 | break; | |
2608 | case O_divide: | |
2609 | print_binary (file, "divide", exp); | |
2610 | break; | |
2611 | case O_modulus: | |
2612 | print_binary (file, "modulus", exp); | |
2613 | break; | |
2614 | case O_left_shift: | |
2615 | print_binary (file, "lshift", exp); | |
2616 | break; | |
2617 | case O_right_shift: | |
2618 | print_binary (file, "rshift", exp); | |
2619 | break; | |
2620 | case O_bit_inclusive_or: | |
2621 | print_binary (file, "bit_ior", exp); | |
2622 | break; | |
2623 | case O_bit_exclusive_or: | |
2624 | print_binary (file, "bit_xor", exp); | |
2625 | break; | |
2626 | case O_bit_and: | |
2627 | print_binary (file, "bit_and", exp); | |
2628 | break; | |
2629 | case O_eq: | |
2630 | print_binary (file, "eq", exp); | |
2631 | break; | |
2632 | case O_ne: | |
2633 | print_binary (file, "ne", exp); | |
2634 | break; | |
2635 | case O_lt: | |
2636 | print_binary (file, "lt", exp); | |
2637 | break; | |
2638 | case O_le: | |
2639 | print_binary (file, "le", exp); | |
2640 | break; | |
2641 | case O_ge: | |
2642 | print_binary (file, "ge", exp); | |
2643 | break; | |
2644 | case O_gt: | |
2645 | print_binary (file, "gt", exp); | |
2646 | break; | |
2647 | case O_logical_and: | |
2648 | print_binary (file, "logical_and", exp); | |
2649 | break; | |
2650 | case O_logical_or: | |
2651 | print_binary (file, "logical_or", exp); | |
2652 | break; | |
2653 | case O_add: | |
2654 | indent_level++; | |
2655 | fprintf (file, "add\n%*s<", indent_level * 4, ""); | |
2656 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2657 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2658 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2659 | fprintf (file, ">"); | |
2660 | goto maybe_print_addnum; | |
2661 | case O_subtract: | |
2662 | indent_level++; | |
2663 | fprintf (file, "subtract\n%*s<", indent_level * 4, ""); | |
2664 | print_symbol_value_1 (file, exp->X_add_symbol); | |
2665 | fprintf (file, ">\n%*s<", indent_level * 4, ""); | |
2666 | print_symbol_value_1 (file, exp->X_op_symbol); | |
2667 | fprintf (file, ">"); | |
2668 | goto maybe_print_addnum; | |
2669 | default: | |
2670 | fprintf (file, "{unknown opcode %d}", (int) exp->X_op); | |
2671 | break; | |
2672 | } | |
2673 | fflush (stdout); | |
2674 | } | |
2675 | ||
2676 | void | |
2677 | print_expr (exp) | |
2678 | expressionS *exp; | |
2679 | { | |
2680 | print_expr_1 (stderr, exp); | |
2681 | fprintf (stderr, "\n"); | |
2682 | } | |
2683 | ||
2684 | void | |
2685 | symbol_print_statistics (file) | |
2686 | FILE *file; | |
2687 | { | |
2688 | hash_print_statistics (file, "symbol table", sy_hash); | |
49309057 ILT |
2689 | #ifdef BFD_ASSEMBLER |
2690 | hash_print_statistics (file, "mini local symbol table", local_hash); | |
2691 | fprintf (file, "%lu mini local symbols created, %lu converted\n", | |
2692 | local_symbol_count, local_symbol_conversion_count); | |
2693 | #endif | |
252b5132 | 2694 | } |